I am practicing in order to get a good and reliable forehand. I understand most of the basic fundamentals. I want to focus on one style first so i can build my muscle memory on the shot faster. That is why i want to be sure i am practicing either topspin or flat separate. I want to practice some months working with my topspin and later flat. I want to make sure i know which grips, stance, contact point height, etc are recommended for each one. thanks!