Some things that he's taught me:
1) When coming out of the bottom position, don't lead with your ass "Rippetoe hip-drive" style. That just causes the weight to dump forward. Lead with the chest, you should really feel it in the quads if they're not developed.
2) It looks like you keep on ending up on your toes in the bottom position. Work on flexibility. If you're already flexible, then work on landing in a more stable bottom position through hang snatches and the like.
3) Your rhomboids may need some strengthening. They form a nice and tight upside down V in your back and are mainly responsible for retracting the scapula. If they're too weak like mine, then they give under too much stress which ultimately causes the shoulders to dip forward, which causes you to lose the weight forward.
That's about all the stuff my coach has told me that I can remember, best of luck man.
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