Updating Videos

For inclusion in a later update, how difficult is it to include the various highlights and arrows as were integrated into the video linked below?  I believe that Kit also did something similar to this in some of his videos.

 

http://gymnasticscoaching.com/new/2013/02/training-backward-handspring/

 

Just to clarify, I am not interested in voice, but labels etc would be appropriate.

 

 

I haven't played with it, but it shouldn't be difficult. In any event if we had any trouble, I know Kit would gladly walk me through the process.