Tip: Layer 3 backgrounds and tides disappear when you hit a message box, so plan your level around that. For example, you can add a sublevel without layer 3 at the start/midpoint, and include your message there.
You've definitely shown some of this off before on Discord and I think I've asked you before but, are these charcoal drawings? They certainly look it with the high contrast and smoothed blending of colors.
Thanks, m8. The only two that are charcoal are the unfinished ones of the wooden structure with the skulls and hanging femurs, and the floating skeletal goat thing with the staff. The rest are graphite.