There was an artist doing that burnt hole in paper thing I saw at a gallery 20 years or more ago. They had flat multiple layers of paper slightly spaced apart. 30x40 inches or so. Framed and hanging up in the gallery. They were amazing.

I just went and googled "Burnt holes in paper artists" Yikes! It's so beautiful all the stuff I'm seeing... I was trying to paint marks like these. And that other thing that happens - seeing things I'm doing that others have already done. And they have beautiful websites and... whew.