I'm swamped with being busy, so I wasn't even going to vote on this challenge, but looking at the thumbnails, yours stood out to me and literally made me laugh out loud. Such a fun idea. So now I have to vote... :) It may not be technically perfect, but it's very, very good and you get a bonus point for making me laugh. 10
Very good saturation and detail. I like the use of Connex (?) as your works. I almost did this too, but I was going to do the actual bookcover, with a screaming mouth on the bottom and a photo of a flame on the top. Of course, nobody would have gotten it who hasn't seen the book.