I think you did a great job with the coloring, particularly in the fuzzy tones on Judy's head, ears, and upper torso.I looked at the original link for reference, to find there was actually a collection of sketches there. Another one I saw there was a simple sketch of Judy in a dress, which I think would look adorable in color.If you were looking for ideas on another sketch to color, I'd definitely cast my vote for that.