I use a wall drill that I seen shooting coach Mike Dunn teach. You have the shooter start with the ball standing straight up, and then you tell them to go to position 1, which is them having their legs and hips, loaded their wrist loaded, and the ball around their waist/stomach area, then we go to position 2, which is them having the ball in a setpoint right around their head and making sure the elbow is somewhat underneath the ball, but the main thing with this part is to make sure that only the Ball is moving up to position 2, our legs and hips stay loaded and we focus on being patient, once we are there, then we go to three, which is just extending our legs, our arms and everything at once. Once they understand the three positions it’s very easy to coach them through it as you just have to say 1, 2, and 3. Once they get the sequence down, then we move to actually taking real shots.