Skin Stealer Racial Template/Monster

So here's a racial template for the Skin Stealer. The Skin Stealer appeared first, as far as I can tell, in the Trial of the Beast in Carrion Crown. The concept of it, I believe, is older than that. Working on the morph ability for its skin-stealing proved to be a little difficult, and I think that the limitation is a little larger than it should be. I include my notes on how I worked out the limitations on it.

Art from "Trial of the Beast"
I can't figure out who did the art...