Don't judge the book by its cover

While archiving and storing my works, something I like to keep on top of, I get to see some of my older works again and came to think of them as book cover illustrations. I love books and their covers .... if they suck me in, if they invite me to pick up a book and leaf through it .... I feel that some of my works might be quite inviting as book covers, like these I posted below?