This is a less powerful serve, but in theory it should give players more accuracy and spin than the flat serve. The ball stays low and spins away to the left from the opponent.
Right handed (above), Left handed (below)
How: The slice serve starts off in the same way as the flat serve, until the ball is tossed into the air. The toss is out in front and more to the right of the body than the flat serve. If a clock face was being held in front of a player, the ball should be tossed at about 2 o'clock, or 10 o'clock for a left handed player.
Also with this serve the player does not make contact directly behind the ball but more to the top right of the ball to add the spin.
Try to make contact with the ball at the highest point and then follow through.
Points to remember: Feet shoulder width apart and parallel, and at a 45 degree angle to the baseline.
Returning the Serve: Make sure the player is not standing too far from the spin side as this will make it difficult for them to return the ball after it spins low and further away from them. Against a right handed server this would be too far from the tramlines on the deuce court side and too far from the center line on the advantage side of the court.