I shot my 9mm for the first time a couple nights ago. I shot about 200 rounds from 10 feet to 50 feet. I kept a nice group for the most part, but 90% of my hits where a little high and to the left. I'm in the police academy and want to shoot better. Any tips on what I'm doing wrong? I'm practicing the grip and form that we were taught in class so the basics are covered. I'm not sure what I need to tweak to hit the center of the target. Thanks.