You look very back foot heavy.
Even in the recent example you appear to be making the top turn by sitting back and bending at the waist so you're stomping on the rear foot, instead of getting on the front foot and twisting while engaging the rail.
Try to stand up straighter to bring your hips forward and compressing on the leading leg, then lift your right hand so you can put the elbow in your back pocket whilst you push the coffee cup through.
Replied on These waves are about one year apart....
23 Dec 07:44
Scott Wagenblast As Clay says, think of it as a take off.
At the moment the nose of the board is up in the air, so you're coming down on the tail.