Today, in conjunction with our Cc Letterbooks, we were decorating body tracings to look like clowns. One of my girls was doing it very carefully, and when she wanted to stop, I told her it wasn't a problem, she could. It's going to take us a few days to complete anyway, and I don't want to pressure them when it comes to fun projects. Five minutes after I told her she could stop, she was back coloring, which was totally fine as well. However, when I checked back on her a few minutes later, the whole thing was scribbled over in red crayon! How do you deal with students starting off following directions, doing good work, and then ruin the whole thing on purpose?