Instructions
Hold the Wii Remote as you would a television remote.
Hold down the "B" button with your index finger to grip the ball. The "B" button is located under the Wii Remote; it resembles a trigger. If you release the button, your character drops the ball, so maintain your hold until you are ready to let the ball go.
Bring the Wii Remote up to your face the way a real bowler raises the ball before a throw.
Bring your arm back slowly until it is fully extended behind you.
Swing your arm forward quickly until it is parallel with your knee.
Quickly flick the Wii Remote with your wrist in an upward motion and release the "B" button to release the ball. Continue the throw until your arm is extended in front of you. Make sure that Steps 4 to 6 are one smooth motion.