I see nothing in your technique that would cause shoulder or elbow pain. Can you be more descriptive about the pain and where your feel it? Does it hurt while low bar squatting? Do you have a video of your squat so we can check your grip (often the cause of shoulder/elbow pain)? How much and how often are your overhead pressing?
I'm asking alot of questions, but this will help us get to the root of the problem.