When you are trying to increase the spin on your table tennis shots, one of the key things to do is make sure that your racket is tacky. This can be accomplished by using a commercial racket adhesive or by simply sweating on your racket. When your racket becomes tacky, it will cause the ball to spin more when you hit it and this can help you control the game much better. If you find that your shots are not spinning as much as you would like, then making your racket tacky is a good way to improve them.