Hero and Villain development

Here is my progress so far with my hero and villain. I'm struggling quite a lot with my villain I know what I want his body to look like but his head is still a bit up in the air. I think the only way to get round it is I'm just going to have to keep drawing him till I come up with something I like, so I decided to leave him for the time being and move onto my hero. I pretty much have him figured out I just need to give him some hair so that I can refine his features a little more, at his moment his nose might be slightly to wide.