[EdZ]

right hand clubHEAD (maintain bent right wrist)
left hand clubFACE (maintain flat left wrist)

Better to focus that rotation of the back of your left hand. Using the right hand is a recipe for throw away. A left handed backhand in tennis, with overspin that is low and away from you.

Drill hitting shots left hand only to feel the hinge action of the left hand - the feel he is after is horizontal hinge - full roll

Also, make sure you take every stroke to both arms straight - active or passive the right arm straightens but the right wrist does not.

chip, pitch, punch - start small and build up only when you have 'got' the level before