Ginny, Neville and Luna sketches with Casein Paint.
I am working with a limited palette so it is hard to get some of the colors (violet, bright red, pink etc). The second is with some photoshop retouching.
Palette: Venetian Red, Golden Ochre, Ultramarine Blue, Burnt Umber, and Titanium White.
I like the paint. It behaves a lot like gouache. It is a little more forgiving if you go back into it after it dries. I am also tired of working with a limited palette. :) I need to buy some more colors.