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Spread your fingers to grip the ball with your dominant hand and place your off hand on the side of the ball for support. Then put the ball in the shooting pocket so that you are in the triple threat position and can pass, dribble or shoot.
A strong base is crucial for a good shot. Your feet should be square with your shoulders and your legs bent to provide both power and balance.
Keep your eyes focused on the rim and not the ball. Your dominant arm should form an "L" shape parallel to the ground.
Be sure to keep your elbow in line with the rim as you extend your arm to shoot. Grip the ball with your fingers to create backspin when you release the ball. Your off hand should support the ball.