First of all, do market research, determine readers' groups and preferences, and see what is popular in the market, or what is the potential demand of readers. Then determine your theme. The special feature of children's books is that the buyers are often parents, so we should not only impress children, but also impress parents. The second is to contact the author ... whether it is a picture book or a story book, a teaching aid and so on. Then find a text editor, proofread and edit, and read and edit. I won't go into details one by one.