Take just a few minutes to stretch your arms, shoulders and leg muscles prior to warming up with any rotational forces such as practice swings
Start your practice session by feeling your impact position, make swings that stop at impact and feel the correct position of your hips, legs and arms
A two plane swing requires you to actively cock your wrists. With a one plane swing the weight of the club tends to hinge your wrists back naturally and making the swing less complicated.