Not bad. I'd say draw from the inside out. Focus more on capturing the skeleton, worry about anatomy less for now. It'll help you nail proportions more accurately and give you a solid foundation on which to build your forms on.
Which leads to my next tip - focus on forms (cylinders, boxes, etc) rather than the outlines of muscles.
Check out Howard K. Frosberg's book here:
http://www.amazon.com/Approach-Figure-P ... 0891340238
Great tips for any artist who wants to learn how to draw the human body.
