Both images are viewable.
You have a great start in terms of anatomical structure and shading. Keep practicing, the more you do, the better you become!
May I recommend Stephen Peck's Atlas of Anatomy? Very good book indeed, especially for references.
Nice debut! It's always good to see more underrated source material get some coverage and the DDR series is a good one to explore. This mix sounds really reminiscent of the DKC Osts to me--I'm getting a real "Fear Factory" vibe here.