Okay, took me a bit to realise what was happening. I was like, there must be a glitch somewhere. I've appeared on his head and I have demon hands. haha brilliant outside-the-box thinking there. As I got used to the controls it got easier to paint.
I really recommend developing this further. It's great!
Some Bugs: the controls began to mess up a little at the end, his arm kept twisting and every time I grabbed the palette it would shake.