They smudged a bit and stained my hand, specifically the black one. However I think they might be good to use with watercolors, because I will not loose my sketch lines and it might provide a nice look. I guess I will be experimenting with them again.
I tried to see if the white would look white on top of the others but it mostly blended and lightened the other colors, so I don't have the lightest lights in this one. But I think that my witch came out okay. I am having fun trying to create different expressions and perspectives. It has been a good practice.