Ah, Ryoko, yep she was the first one I had wanted to do too, but she's probably also the hardest. She has fangs, unusually chaped ears, and what may look like a mop of har, would be pretty fifficult to do by just applying magnets to some already existing model. Washu, I think would be the absolute hardest hairstyle to make, but Ruoko comes in a close second. Of course once Washu's was successfully done, Nagi would be easy.