The ball is passing over the net.
Points to look for:
The player is beginning to come out of his crouch, and is returning to his basic ready position.
The bat has finished much higher than for the forehand backspin and forehand float services.
The player is continuing to watch the ball, as well as how the opponent is preparing to hit the ball.
The shoulders have nearly returned to their original positions.
The ball has passed only a few inches over the net, which helps make the serve harder to attack.