What’s the first thing a potential reader is going to see about your book? The book cover. Yes, readers do judge a book by its cover. Your book cover needs to catch a reader’s eye and convey its value to a potential reader.
In addition to being visually appealing on the front cover and spine, there is certain information you want to include on the back cover: a blurb about the book, a barcode and ISBN number, and possibly a brief author bio.
Hire a book cover designer who understands your genre. The book cover also needs to look good as a tiny thumbnail on a web search. Your book cover designer will either design a cover that looks good at all sizes or, more likely, design a separate cover for smaller sizes.