Bought this to make keyrings with the kids. I used stamp paint for handprints and a permanent marker pen to write their names and dates. The first time of using it I hadn't let the plastic get too hot so although it shrunk it wasn't flat. I popped it back in the oven and then placed it under a heavy heat proof object when I took it out and it did the trick. Even though I could feel the roughness of the paint, I couldn't wipe it off. Not sure how that works but they were great! This is the smaller sheets of plastic and not the larger ones.