Before you throw the ball, so the tool Figure 3, 4, 5, 6, notes that must be boycotted because it will be able to force the ball to go in the direction we want. Not that the ball-drop the ball or the ball is hit.
Before throwing them upside down in Figure 3,4,5,6 reason to be upset, because it can be used to force the ball in the direction that we want. Whether the ball to release the ball or the ball is hit.
Before throwing the ball down hand down as figure, 5 6, 3 4, reason to the back of the hand, because it can force you to follow the direction we need. Whether you let go of that is you or you hit.