I had come back from a two week break from tennis, and as usual had to spend a day getting back into the swing of things, but it was going really bad. For some reason my normally flatish shots had much more topspin than normal on them, which I had a hard time controlling. Now I realize it was because I was inadvertantly doing the thing where you point the butcap at the ball. The only problem I have is that it is inconsistent and that sometimes my wrist feels kind of weak and loose when I make contact. Any tips for improving my shot?