I can now edit your Tennis Video of you hitting and offer suggestions.

I found this great site called Fiverr.com, which allows people to prepay for a $5 amount for a wide range of services.  As for me, send me a clip of you playing for about 1 minute and I will edit the video, and give you at least ONE strong concept to work on and develop your game.  Generally, I can get this done in two days turnaround, sometimes much faster.