Yesterday was my second time at the range, second time shooting my Glock. I'm still off center at 10 yards... Left & low. Better than last week. I think I figured out my largest fault - flinching. There was one time (out of shooting 150 rounds) that I did not pull the trigger, thought it was back, and was shocked to find myself drop/push the gun down a half to a full inch! WOW, I had no idea. it was like an involuntary jerk. I thought I was pretty sure about my stance, grip, and even dealing with recoil - which is not anything to be concerned about with a Glock 19. Yet, it appears in my subconscious, I am reacting to that recoil physically every time I pull the trigger. Consciously I have no fear of recoil after the first day i shot, but that was only a week ago. Yesterday was better, I'm going to try to go every Tuesday from now on. Any suggestions?