One of the most important skills in table tennis is having the ability to convert a rally i.e. when an opponent topspins and you want to regain control over the point with aggressive play. Unfortunately, however, this is one of the most difficult shots in table tennis and in order to master this show you will need to take it in steps to progress. We would suggest that when completing this exercise you begin with an increase in your forward motion to your block. When you get consistent at that then begin to turn more and spin over the ball.