Originally Posted by
Michael Wolf
Looks like you're starting with the bar over your toes instead of right over the middle of the foot. Before each rep, align the bar over midfoot (do this on the first rep by stepping in so the bar's an inch away from your shins and moving neither your feet, nor the bar, at all after that), as well as your own weight over midfoot. Squeeze up and pull from that position, making sure to actively pull the bar into your legs the whole way.
You're also looking a bit close. Try looking at something a bit further away, 10-15 ft.