Disclaimer: I am giving general technical advice "stroke by stroke" and explained how the combination of wind resistance and weights will identify your weaknesses, but it is not meant to take the place of the advice from your personal instructor who should, through the use of the Pro Racket Plates, help you identify and correct more precisely your weaknesses under his or her supervision. For example, conceptually the serve is not an easy stroke to learn and beginners may not understand the verbal concept of hitting "up" on the ball. But by adding the weighted plates to the racket and actually attempting to repetitively move the racket in the required upward direction, you should now experience the "feel" of how it should be executed.

You will discover that the Pro Racket Plates will be that extra tool in your tennis bag to help take you to the next level.
First, make it a habit to have the Pro Racket Plates attached to your spare racket, or do I dare say, "cracked" racket near you for immediate use.