I used some snowboard magazines and my personal experience to create this scene. I like the freestyle very much, but I feel the real adrenalin when I go down in the deep snow, you seem to float on the water, when the slope is high the adrenaline goes wild and when you turn a big wave of snow surround you...and this is the situation that I wanted to show through my image.
I subdivided this article in different parts:
First of all I build the ground. On the create panel choose the plane primitive with 15 for length segment and 15 for width segment, then rotate the plane as in the image.
Now go to the edit panel and choose edit mesh, on the sub object choose vertex and move it to create a realistic bump and wake.
Apply the mesh smooth (norms) and choose 1 for iterations, to smooth the ground and have a perfect snow plane.
By now leave the plane to create the snowboarder, create a box, and increase the segment as in the image.