Yes - work on keeping the stick over your ears so that it is "directly" over your head, not simply above your head. It will help if you extend your arms and shoulders upward, keep your elbows locked and pull the stick apart. You should feel very worked throughout your shoulder girdle. Maintain a grip that puts the bar 8 to 12 inches overhead. Look up www.mikesgym.com
and do the Burgener warm up before you work on the OHS. If you lean forward as you squat you need to work on your shoulder flexability. Make sure you stay heavy on your heels, don't push with your toes. Very, very important movement, do lots of Tabata squats in addition to your OHS. Start and stay light to perfect your form.