The arm swing and finish is the hardest thing to correct in a thrower besides having a feel for which finger the ball is coming off of through the throw. Lucky Baseball Rebellion has developed some fairly simple concepts to allow your child to efficiently enhance upper body mechanics and arm swing.  Here is a #TransformationTuesday tweet from Baseball Rebellion showing how a forty minute lesson can help your son or daughter with arm swing mechanics.

3. Elbow: The throwing elbow must be equal to or slightly above the throwing shoulder. As soon as the pitcher lowers the elbow below the shoulder, they put additional stress on that arm. The angle of the elbow joint should be no more than 90 degrees. Pitchers who throw curveballs at angles greater than 90 degrees may put additional stress on their throwing shoulder.
First and foremost, when you take the mound, the main thing that you need to focus on, is executing pitches. Thus doing so consistently, means that the results position you above the rest of the pack.  Now who doesn’t want that? Whether you are new to throwing the Slider, or you need to go back to the drawing board, hence this post/video will simplify your process dramatically.  You will not be able to find this basic yet dynamic information anywhere.  Believe me, I have looked.  Of all the Game Changing content that the Slider Domination Blog has provided for pitchers, this is the most important one yet. Very easily, this is How to Throw a Slider in Just 3 Simple Steps.  Throw the Slider consistently, and you will flat out DOMINATE THE COMPETITION!!
In this video I share with you how to make a tool that you can use to work on your curve.  What you do is screw two baseballs together.  For the pitching drill you want to throw the balls in a way that they rotate tightly end over end on the axis in which you are trying to get your break.  This tool and pitching drill can dramatically improve your curveball.