Thanks, but the plug-in instructions are not clear. I've installed the plug-in, and it appears to be all there. But there's no instruction on how it works. The paint.NET wiki says, for example, "Create a new layer, and then move it below the the original layer." but doesn't say how to do that. It assumes that I'm an expert already, but I'm just a beginner. There doesn't seem to be any "how-to-do-it" info anywhere.