I ran into one problem, the only glass bowl I had was bigger than my cookie sheet, so during the baking the clay seeped under the bowl causing a lip, after 30 min of filing with a serrated knife it finally came off the bowl. The inside was a bit soft still so it went back in to cook more. I have my paint ready to go, but still no water proofer. I plan on hand painting some decorations on it, I hope this works out well, I made the hide huge, so I will not need another one (unless my bp grows to be a giant)