I just stick with the simple and efficient, practice makes perfect.

The more you shoot, the better you will get. All you need to do is what Spul said, make sure they aren't doing some weak ass jumps, make sure they jump all the way and maybe take a look at their form and see how they can improve upon it.

It does help a lot if you have a decent jump shot yourself, because I mean if you suck at it then how can you coach others to be better at it.

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