Whats happening here is that you are taking the club so far back, that you end up with all of your weight on your left side, you have no choice but to come back over the top, the other thing is that your lower body and your hips are out of sync with your upper body... And your club is way past parallel to your target... Try pre loading your weight on the inside of your right foot and do not let it get outside of your right foot, and allow the weight to transfer to your left side through impact... This may help you sync your upper and lower body up, and with resistance you will feel during your back swing should help you not over rotate your shoulders...
Bryan