I hadn’t had much success when masking delicate projects. I’d tried using blue painter’s tape and some other “delicate surface” painter’s tape called Green Frog or something like that. All those tapes would end up pulling up the surface of my finished project - especially for paper or photo mat board. I had resorted in one attempt to sticking the tape on my bluejeans prior to putting it on the project to take some of the tack out of the tape. Frustrating experience overall.
However, just tried a project with 3M 658 tape, which is essentially a 700" roll of post it note adhesive. Very easy to apply, removed cleanly, no residue. Available online, not too expensive. Worth a try if you don’t want smoke marks on your surface and it’s too delicate for painter’s tape.