The Kick/Spin/Topspin tennis serve the ball contact is bellow the ball in the left bottom side as in the picture above. Important to teach is that the follow trough and pronation of the racket goes to the right side for right hander's (reverse for left hander's) and away from the body.
You can do it too, go:
http://www.tenniscruz.com/content/view/658/1/
finally i know how to pronate my wrist on a topspin serve
loseri123 7 months ago
Good one.
premanandr 11 months ago