Hiring cover talent should feel exciting. In reality, it often feels like a gamble.
You scroll portfolios, pick someone whose style looks “good,” send your brief, and hope the final cover doesn’t come back looking like a random Canva template with your title pasted on top. Or you hire an illustrator, get beautiful art, and then realize the typography and layout still feel amateur in the Kindle Store thumbnail.
If you’re trying to hire an eBook designer or illustrator, you don’t need to become a design expert. You just need a clean way to spot who can actually build a cover that sells.
That matters more in 2026 because the e-book space keeps expanding. Mordor Intelligence expects the global e-book market to grow from $18.02B in 2025 to $18.85B in 2026, with further growth projected beyond that. More books means more competition for the same scroll-time. Your cover is not just “branding.” It’s your ad creative, your storefront thumbnail, and your first trust signal.
First, Know Who You Actually Need
People use “designer” and “illustrator” interchangeably, but they are not the same job.
A book cover designer is responsible for the full marketing cover: concept, layout, typography, hierarchy, color, genre signaling, and making sure the cover works as a thumbnail.
An illustrator creates artwork (characters, environments, symbolic objects, hand-drawn lettering, custom scenes). That art may become the focal point of the cover, but it still needs a designer’s layout and type decisions to convert.
Sometimes you find a unicorn who does both well. Often, the best results come from pairing strong illustration with strong cover design.
So before you hire an eBook designer or illustrator, decide which of these situations you’re in:
- “I need a strong cover system, typography, and shelf-fit. Illustration is optional.”
- “I need custom art because stock will not fit the concept or brand.”
- “I need both: custom illustration and a cover designer who can make it sell.”
That one decision saves you weeks of confusion.
The Portfolio Test That Tells You The Truth Fast
Portfolios can be misleading because they show covers at full size. Readers rarely see covers at full size.
Here’s what you do instead: ask the candidate to send 5–8 recent covers as thumbnails (or shrink them yourself). Then ask one simple question:
“Would this cover earn a click next to the top books in its genre?”
If the answer is no, it doesn’t matter how pretty it is.
A strong cover designer will consistently show genre fluency. Romance looks like romance. Thriller looks like thriller. Business looks like business. Children’s books look like children’s books. When someone’s portfolio feels like the same style copy-pasted onto every genre, that’s usually a red flag.
If you’re hiring an illustrator, look for something slightly different: consistency of anatomy, lighting, composition, and storytelling. You want art that feels intentional, not random. Also look for range inside a style, not “I can mimic 40 styles.” Style-chasing usually creates inconsistent brand identity.
Ask For Proof Of Process, Not Just Pretty Covers
This is where serious professionals separate themselves.
A reliable eBook designer or illustrator can explain their process without acting mysterious. They should be able to tell you what happens first, what happens second, and what you’ll review at each step.
A solid cover process usually includes:
- a short discovery around genre and positioning (even if it’s quick)
- concept directions (often 2–3)
- revision rounds with clear boundaries
- final exports in the right formats
If they can’t describe the process clearly, you’re buying chaos.
A great question to ask is: “What do you need from me to avoid endless revisions?”
The best answer is not “anything is fine.” The best answer sounds like: “I need genre, target reader, comparable titles, your promise, and any non-negotiables.”
That’s not picky. That’s professional.
The “Shelf-Fit” Check: Do They Understand Your Marketplace?
A cover that looks great on Instagram can still underperform on Amazon Kindle, Apple Books, Kobo, or Google Play Books because the browsing experience is different.
Your candidate should understand the reality of storefront thumbnails and how covers appear:
- in search results
- in category rows
- in “also bought” carousels
- in ads (BookBub, Amazon Ads, Facebook/Instagram)
This is not theory. Clicks change outcomes.
Reedsy has shared real examples where a cover redesign improved ad results, including a case showing 24.70% more clicks after the cover change in a BookBub ad test context. (It’s not that every redesign gives you that exact lift. It’s that covers are measurable assets.)
BookBub also publishes campaign examples where the cover and offer presentation drove performance, including a “best ads” recap with a winning campaign hitting 1.45% CTR and over 230 clicks.
If a candidate acts like covers can’t be evaluated objectively, that’s usually because they don’t want their work judged by outcomes.
The File-and-Format Test (Most Clients Forget This, Then Regret It)
Even great design work becomes annoying if the handover is messy.
Before you hire an eBook designer or illustrator, ask what files you will receive at the end. You’re not being difficult. You’re protecting your future self.
At a minimum, you want:
- a high-resolution marketing cover image ready for the platform you use
- a web-optimized version for ads and social
- clarity on whether you get editable source files (and what that means)
Platform facts matter here, because they create real constraints.
Amazon KDP recommends a marketing cover image around 2560 × 1600 pixels, saved in RGB (Kindle doesn’t support CMYK), and notes that covers with less than 500 pixels on the shortest side won’t display on the website.
Apple Books’ asset guide emphasizes high-quality JPEG/PNG cover art and warns against blurry or pixelated upscaling being rejected.
Google Play Books supports a range of cover formats (JPEG/PNG/TIFF/PDF/ZIP) and processes them through their Partner Center workflows.
Why this matters: if your designer gives you a small, compressed file and calls it “done,” you may end up paying again later when you run ads, change storefronts, or update branding.
The Licensing Test: Stock, Fonts, and “Who Owns The Art?”
This is where a lot of authors accidentally step into trouble.
If the cover uses stock photos, textures, brushes, or premium fonts, your designer should be able to explain what’s licensed and what you’re allowed to do with it (ads included).
If you’re working with an illustrator, you want clarity on copyright ownership and usage rights. In the U.S., “work made for hire” has a specific meaning, and the U.S. Copyright Office notes that if a work is made for hire, the employer or commissioning party is the initial owner unless a written agreement says otherwise.
You don’t need to turn your cover project into a legal seminar. You just need two things in writing:
- what rights you are purchasing (exclusive or non-exclusive, cover use, ads, merch, etc.)
- whether you have the right to modify the artwork later (or pay extra)
If the candidate gets weird about this, pause. Clear rights are normal business.
The Revision Reality Check: How Many Rounds, What Counts As A Revision?
A lot of “designer horror stories” are actually scope problems.
Before you hire an eBook designer or illustrator, ask:
- how many concept directions you get
- how many revision rounds are included
- what counts as a revision vs a new direction
- whether there’s a fee for major changes late in the process
A professional answer is calm and specific.
An unprofessional answer is vague, or it sounds like they’ll revise forever for free (that often ends badly), or they act insulted you asked.
The Communication Test (This Is The Quiet Deal-Breaker)
You can survive an imperfect draft. You cannot survive disappearing communication.
Ask how they handle:
- timelines and milestones
- feedback loops
- response time expectations
- what happens if they get sick or delayed
Then pay attention to how they communicate during the quoting stage. If they’re slow, unclear, or inconsistent before money changes hands, it won’t improve afterward.
A Simple “Paid Test” That Saves You From Expensive Mistakes
If your project is higher budget or you’re nervous, do a small paid test.
For a cover designer, ask for one concept direction based on your brief (paid).
For an illustrator, ask for one character sketch or one scene rough (paid).
This does two things:
- it shows whether they understood your book and genre cues
- it shows whether their work holds up when it’s your project, not a portfolio piece
A good eBook designer or illustrator won’t be offended by this. They’ll respect it, because it’s professional.
If you want to skip the guessing and work with a team that understands genre shelf-fit, thumbnail conversion, and clean rights and file handover, contact Fleck Publisher for eBook cover design and illustration services. We can help you choose the right approach (design, illustration, or both) and deliver files that work across Amazon KDP, Apple Books, Kobo, and ads.
The Quick Vetting Checklist, Used Like An Interview Script
When you’re ready to decide, use these as your final “yes/no” checks.
Can they show covers that work as thumbnails in your genre?
Can they explain their process clearly and calmly?
Do they understand the platform realities (KDP specs, Apple Books quality expectations, ad placements)?
Will they give you proper exports and clarify source files?
Are licensing and rights written down cleanly?
Do they set boundaries for revisions?
Do they communicate well before you pay?
If you can answer “yes” to all of those, you’re not gambling anymore.
To Summarize
Hiring creative talent doesn’t have to feel like rolling dice.
When you hire an eBook designer or illustrator, you’re not just buying a pretty image. You’re buying discoverability, trust, and a cover that survives thumbnail viewing on real storefronts. If their portfolio fits your genre, their process is clear, their files are clean, and rights are handled properly, you’re in safe hands.
And if you want a team that can handle both cover design and illustration without the usual back-and-forth chaos, contact Fleck Publisher and we’ll guide you through it.
Frequently Asked Questions
Is there a difference between an eBook cover designer and an illustrator?
Yes. A cover designer handles layout, typography, and conversion-focused composition. An illustrator creates custom artwork. Many projects need both roles, even if one person can do both.
What should I ask for in final deliverables?
Ask for a high-resolution marketing cover image sized for your platform, plus a web-optimized version for ads and social. For Amazon KDP, the cover should align with KDP’s recommendations (including RGB color).
How do I know if a cover will work on Amazon KDP?
Shrink it to thumbnail size and check title readability, contrast, and genre clarity. Also ensure your file meets KDP cover guidelines so it displays correctly.
Should I test multiple cover concepts?
If you plan to run ads, testing can be worth it because covers affect clicks. Real ad examples show that changing the cover alone can increase clicks in certain campaigns.
How many times should I use the same illustrator style in a series?
Consistency is usually a win. A recognizable series look helps readers identify the next book quickly, which can improve read-through over time.
When should I hire an eBook designer or illustrator instead of doing it myself?
If you care about genre shelf-fit, professional typography, ad performance, and clean licensing, it’s usually worth hiring. DIY can work, but many DIY covers struggle at thumbnail size and look templated.