I've been having some lower back pain during squats, so I tried adjusting my back angle so that the pain would go away. In doing so, I want to check to make sure my back angle is not too vertical. I also think that my first few reps are not below parallel. Please let me know any corrections that I should make that you can see from this angle. I know it's not the optimal angle for an entire check, but I specifically wanted to make the back angle noticeable.