Drive thru your heels, keep your head up, make sure you aren't arching your low back/dropping your head/shoulders ONCE THE LIFT ACTUALLY BEGINS.
A lot of people set up for the lift properly, but once they push off, it all goes south. If you continue having trouble, taske your set-up slower: make sure you're solid in your starting position, then slowly begin to recruit all the muscles that will be part of the lift; make sure they're all on-board & ready to go - then exhale, keep you eyes open & fixed on the far wall, and drive down thru your heels as you inhale.