Drill: chip with the left hand lower on the grip
To kill the right-hand flip on chips, the instructor has you grip with the left hand lower than the right (reverse for left-handers). The left-hand-low grip automatically lowers the left shoulder and helps produce the follow-through look he wants.
Channel: Dan Grieve
Watch official source at 6:48Why this context matters
The instructor says Matt Fitzpatrick liked this drill enough to take it on tour.