Thanks for the advice guys. I worked on it a bit more and eventually figured it was as good as it was going to get, so I scanned it high and got started with the colours. Here's where I'm at right now (I just had to listen to Opeth and Unearth to really get into the mood, heh heh heh):
I'm having trouble differentiating the skin from the random hairy bits. Using Photoshop to do this, by the way.
Will have some sketch, non-demonic studies up soon