Griff, the mask mostly comes off in one big piece, but the intricacies of the carve around the smaller letters get in the way, too.
I had stained the wood, put on a couple of coats of shellac and clear coated lightly before adding the mask. Lots of drying time in between coats.
I also did an intricate skeleton skull about 1" square on another piece. Lots of the mask stayed in place so I could paint the outline, but it wasn’t near perfect. This less-detailed sign was easy.