Originally Posted by
jameswmccue
I agree with Budgie in that the bar does look too high. Start to position the bar just below the spine of the scapula. A good way to do this is to start with the bar where it is on your back while it is in the rack and then slowly stand up while applying pressure until you feel the bar move just under the spine. You can feel the distal end of the spine of your scapula by reaching either hand over the oppsite shoulder and feeling the ridge on your scapula.
Further, your feet are positioned off-line from one another. It appears that your left foot is forward of the right. Your foot angle is not turned out enough either. Take a moment to make sure your feet are on-line with one another and turn your toes out 1/2-1" on each side while keeping your heels in the same spot. You are aiming for approximately 30 degrees.
Once your feet are in position and the bar is properly situated, follow the advise of Dillon while making sure your femurs track the angle of your feet, which will ensure that your knees are in the correct position. This focus may serve to alleviate the pain you are feeling medially in your knees.