
One thing that helped me through (some of ) these problems (so far), is to have someone "Video:"
you through some stages.
You'll see things that never entered your mind. Having the gun up as you approach a shooting position, where the gun and sights are as you do a mag change, hand position, head position, draw and first shot procedures, etc, etc, etc, etc. Another shooter won't mind using your cell phone or camera to record you shooting.
It's amazing how obvious some mistakes are when see yourself make them. It's NOT that obvious as you do them. JMO