Liar, this looks nothing like Helm
His hands have faces! I'm not sure what to think about that
I like your range of colors; a little low on contrast but the details pop so no biggie. You should be able to cut out a few of your midtones, 12 colors seems like a bit much for what it is. Anatomy of the larger muscle groups is off, googling any anatomical reference chart should help you put your bulgy bits in the right place (too lazy to make that sound any less wrong)
I'd cough up an edit if I wasn't at school, and on a Mac :x