Nice pictures!
What trick? From the pics im guessing raley to wrapped?
You probably already know this but only tips i would say is to try keep the bar closer to your hips and really pull yourself towards the bar/kite.
Also in the second picture you are tweaking/rotating the board clockwise, if you tweak it in the other direction to which your going to rotate you will have more power to pull against the kite with.
Let us know when you have nailed it!
Wish we had wind like that now!!