They Permit the book cover's overall look to become considered from a number of angles. On top of that, if there are any design difficulties, the designer will make well timed adjustments and quickly preview the adjustments. I have attempted several book cover makers, but none compare to Mega Creator. https://whitemagicstudios.co.uk/blog/why-the-right-book-layout-can-be-a-game-changer-for-your-book/