Instructions
Insert the "Wii Sports" game disc and choose a Mii to start the game.
Choose your dominant hand so the game can accurately mirror your movement.
Select "Tennis" from the available game options. Choose single or multiplayer modes.
Move the hand holding the Wii Mote in the air or press the "A" button to toss the ball in the air to begin the serve.
Swing your arm just as the ball gets as high as it's going to go and begins to fall. If your timing is accurate, the ball will fly across the net much faster than normal. If you accurately perform the power hit, music will play and "Power Serve" will flash across the screen briefly. Do this move repeatedly when you serve to increase your score quickly.