Boggus makes a great point a smooth trigger press makes the difference in hitting the target. Dry fire practice can not be stressed enough, start slow and in time a smooth press can be compressed to quite quick times. I used to at the end of a practice session ( this requires a paper Target). AT 3 to 5 yards put 3 shots into one hole it will show you what you are doing right or wrong. I still like the front sight . I agree with Happy Jack about time and magazine changes wasting time, make sure to get a good grip with the index finger pointing up the slide towards the bullet, you have a lot of practice pointing use it to get the magazine in the well. Put the flat of the magazine to the flat of the mag well and rotate it.
ST