When shooting you should follow through and hold it until the ball hits the rim. Your index finger and middle finger should be the last two to leave the ball and place those fingers in the rim. To get a good feel for your follow through, lie on your back and extend your arms. Hold the ball in shooting position and flex your follow through on each release of the ball, make sure to snap your wrist for muscle memory. Control the flight of the ball and try to make it land where it took off from.