#1 – BEFORE GOING TO PRESS
You’ve finally written your first book, now what? Please make sure that you find an editor, book and cover designer that “specializes” in working with books. Be certain to interview them, get samples of their work and talk to their references before making your choice. Ensure that they are willing to “communicate” with your printer of choice, to make sure that the files (see #3 below) are prepared to the printer’s guidelines. (File preparation instructions should be found on your printer’s website). Experienced book & cover designers should understand that some design features can be very expensive (make sure they are aware of your budget) or a manufacturing nightmare. An enticing book cover will typically generate 80% of the sales of the book, so the front, back and spine should be equally interesting.
The Book Expert's Site 