There is a layer in this page called “I thought I was done drawing bookshelves when I finished chapter 1 of Absinthe”. It contains abstracted books, cut and paste from that comic.
“Never draw anything you can copy, never copy anything you can trace, never trace anything you can cut out and paste up.” – Wally Wood
Also, Mattie’s shape is inspired by some of the work of master photomanipulator J. K. Potter, most specifically his portrait of Lydia Lunch.