Top spin serve footwork
I have just been taught the topspin serve. I need some advice because I need to know wether I need to change my footwork to gain additional topspin. I have been taught that the topspin serve should be strook from 7 "o" clock to 2 "o" clock but Iam still having trouble. I seem to be hitting the hybrid serve rather than the topspin serve so I would be grateful if anyone could give me some advice!