Here, the human figure is throwing a football and, to learn proper technique while watching the video/succession of {HEAD ~ images}, a viewer can change the orientation of {TAIL ~ the device} to see different angles of the human figure to learn how to emulate the move 
Here , the human figure is throwing a football and , to learn proper technique while watching the video / succession of { HEAD ~ images } , a viewer can change the orientation of { TAIL ~ the device } to see different angles of the human figure to learn how to emulate the move
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH