Generally inspired by vintage pulp detective novel covers, particularly those painted by Robert McGinnis.
Watercolour, pencil and Photoshop.
I may play with the design of this some more. It was initially formatted for a comic book cover (for the print version), but it was looking more cluttered than I’d like, and some of the elements are really only relevant to the comic book version. So I removed those to make it look more like a paperback novel, but I think I need to play around with the type layout again.