These two shooting drills are among the thousands of resources for both coaches and player available from basketballhq. They have several more videos as well as basketball coaching resource articles.
The drills are coached by Ryan Panone.
I encourage you to think about the best way to tweak the drills before you implement them so that they offer the most benefit for your players. Even as you are first implementing them, you may need to continue the process of making some adjustments so that they are contributing to the improvement of your players.
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Make 2 Before Missing 1 Shooting Drill