guide
How to illustrate a children's book with AI
Illustrating a picture book with AI is mostly a consistency problem: the same child, the same style, twelve pages in a row. Here is what actually helps.
The real problem is consistency, not beauty
Any image model can make one lovely picture. The hard part is making the same child, in the same clothes, with the same hair, appear on twelve pages in a row. Judge a tool by page eight, not by page one.
The technique that helps most is a character reference: one description or reference drawing per character that every page is generated from. It makes drift much smaller. It does not guarantee identical drawings, and any tool that promises that is overselling.
Describe characters once, in detail
Write a short, fixed description for each character and reuse it word for word: age, hair colour and shape, skin tone, eye colour, and one signature item of clothing. The signature item — yellow boots, a red scarf — is what readers use to recognize someone, so never change it mid-book.
Keep the cast small. Two or three named characters is plenty for a picture book, and every extra character is another thing to keep consistent.
Pick one art style and stay in it
Watercolor, classic storybook, paper cut-out, comic, flat vector, 3D — all work, but only one per book. Softer painted styles forgive small inconsistencies; crisp vector and 3D styles make every difference obvious.
If you plan to print, remember that heavily textured, very dark styles eat ink and lose detail on a home printer. Lighter styles print better at home.
Leave room for the words
Ask for compositions with clear space — a plain sky, a wall, a stretch of grass — in the area where the text will sit. Otherwise you end up putting sentences on top of a face.
Keep important detail away from the edges. Anything near the trim line can be cut off when a page is printed or folded.
Fix the one bad page, not the whole book
There will be a page where a hand goes wrong or the character looks like a cousin. Redraw that page rather than regenerating the whole book — regenerating everything usually introduces new inconsistencies elsewhere.
Text inside pictures is still unreliable. If a sign or a book cover has to read correctly, keep those words out of the illustration and put them in the story text.
Prepare for print early
Decide the page shape before you generate anything. A square page, an A4 portrait page and a folded booklet all crop differently, and rescuing the wrong aspect ratio afterwards means losing part of every picture.
For home printing, aim for a resolution that stays sharp at the size you will print, and check one page on real paper before you print twenty.