While practicing, my right hand seems to keep falling down and resting hard on the tone knob (fender). I'm not sure of the correct form for the strumming-hand and what to do to prevent this (it keeps creeping down and out of the picture - I must say I'm left handed playing right handed so getting the right hand to do anything is a new trick for me!

Looking for advice on how to keep my right hand positioned correctly - thanks.
John