To make the wings I used some leftover plastic casing and cut it to the shape I wanted. I then sanded both sides with some fine grit sand paper and then drew my lines.
Still, there's a lot to do yet. I'd like to do more highlighting on the boils and there are open sores and bones still exposed which need some detailing. Overall, though, I'm quite pleased with the monstrosity. He is actually a little bigger than a Great Unclean One!