What makes a book interior look professional? Consistency and simplicity. Professional books use readable fonts, comfortable margins, clean chapter openings, and the same style from the first page to the last. Readers often look at the inside of your book using Amazon's "Look Inside" preview. If the first pages look messy, many will leave before buying. In this article, you will get a clear answer, then the solution step by step, and then an industry hack that makes your inte