This had been sitting on my computer bot about a month whilst being pushed behind other projects. I wanted to submit this SO bad.

This is not as much about the picture itself as about the anatomy. Even as early as classical Greece, artists have recognized that any movement of the legs requires engagement of the hips. For instance, try stepping forward without tilting your hips in the direction either foot is going. It's possible, but somewhat uncomfortable, unless you enjoy walking like an automaton.

Here's an example of what I mean, with a stiff Egyptian statue and a less formal Greek:
http://dsc.discovery.com/news/brief.....tatue_zoom.jpg http://www.shunya.net/Text/Herodotu.....reekStatue.jpg

Also noteworthy is that whichever direction you tilt your hips, you also have engage your shoulders to maintain balance. Seriously, try it sometime. Stand in front of a mirror and try to recreate the pose of Michelangelo's David while keeping your shoulders level. Doesn't really look or feel right, does it?
http://www.toscanaviva.com/Firenze/.....chelangelo.jpg

Anyway, that's just my two cents, and a great thing to remember when figure drawing. If all else fails, EXAGGERATE!