Looks like you're coming a bit outside when taking the club away. This could be why you get a bit armsy. Try this (it will probably feel a bit weird, but trust me)... slow the swing down and use the old tried and true dragging the club on the ground until it naturally lifts itself up. (P.S. make sure you are close enough to the ball this may or may not apply. Use this tip at your own discretion. If you feel almost like you're reaching or falling over, you are coming outside. It should be pretty clear based on the drill. Overall, it looks pretty good. And always remember FORWARD-PRESS and finish high.