Ground Backflip.

1. Ride straight with your weight slightly toward the heel edge.

   A backflip rotates backward (toward your spine), so a touch of heel-side weight makes it easier to start tipping back. Choose a well-groomed, flat section of a medium-pitch slope. A controlled medium speed is plenty; do not go too fast.

2. Sink into a deep crouch with both knees bent to about 90 to 100 degrees, and drop both arms behind you to load up.

   Keep your back upright as you sink instead of leaning forward. If you lean forward here, you will rotate forward and never get into the backward flip.

3. Pop as straight up as possible, not back and away.

   Press through both heels and explosively extend your knees and hips to launch vertically. The rotational momentum is set entirely in this instant of takeoff and cannot be added in the air. Your height (air time) is literally the time you have to complete the flip.

4. As you extend, swing your lowered arms up and back over your head, and send your eyes back and up without tucking your chin.

   Tipping back head first, then shoulders, then spine puts backward spin onto a body that launched straight up. The timing of the arm swing and the head tilt is what starts the rotation.

5. The moment your body starts tipping back, pull both knees to your chest and grab your shins to make yourself small.

   The tighter you pull your arms and legs into your body, the faster you spin on the same momentum, so a tight tuck makes up for any height you lack.

6. Once your head has passed through the bottom and your feet are swinging up over and back down, when the landing (the snow) starts to come into view, throw the tuck open by extending your knees and arms all at once.

   Opening up slows the spin, so open a touch early to avoid over-rotating.

7. As the board comes level with the snow, land on your full foot with both knees bent and absorb the impact by sinking down.

   After landing, bring your upper body back toward your direction of travel so you do not fall back onto your heels.

You can pin your own clip to the tricks you've landed (My Video).