The way you shoot does not count for much, the only important part of the shot is a consistent release. Fact is that its very hard to change the mechanics of a players shot after 15. To become a better shooter, simply shoot. If you have to use the same mechanics every shot to make shots, you'll be a great foul shooter and spot up shooter but you will be very easy to defend because the ball will be in the same place for the defender regardless of how he plays you. Great shooters become great shooters because they make between 500 and 4000 shots a day. Do 5 twelve spot drills before and after practice, that will give you 1200 made shots a day, your shooting will improve. Larry bird shot behind his head, Jerry West had no follow through, Chris Mullin's guide hand and shooting elbow would wander and he's the greatest shooter I've ever seen, Steve Kerr leaned left, Reggie Miller Followed through his guide hand, Glen Rice lifted his head too high and didn't have his ball hand bent at 45, Peja drifts left, fades and spins the follow through left, Dirk Shoots behind his head, Stockton shot from his ear, Ray Allen does not get full extension. Remember basketball is a game you can master but never perfect. Master what you have before you try to perfect the game.