I was playing around with acrylics on a plastic board, and made a monotype by rolling the back of damp printmaking paper that I periodically set on the plate. Later ink and more paint was added. The problem, though, was that over time the damp paper noticeably shrank, and the plate started to print outside the original border. I tried to wipe it off and it was a mess, so... if you try this at home, keep the paper either damp or dry the whole time!
