To the OP. Respect for putting yourself out there! Snowolf and Matt's advice is on point. Your upper body IS very quiet and looks well aligned with the board and turn shape is very nice. Think about keeping both knees bent equally and you will get your weight centered. From there, flexion and extension will be easy to add.
To think of flexion and extension, think of pushing your legs out at towards the apex of the turn, and bending the knees more as the board passes under you. (Suck it-Push it is an easy way to remember it for some reason!). One exercise to try is to is to picture yourself riding down a long hallway. Try to push your board out to the sides of the hallway, as your body takes a path down the middle. If that doesn't make sense let me know and I'll try to word it better.
How long have you been riding BTW?
Last edited by hhaidar; 11-08-2011 at 10:01 AM.