1) More speed
Hard to tell from the video, but it looks like you came up short on the landing or barely made the landing. You need to take more speed so don't end up bouncing off the knuckle.
2) Carve into the spin
Right now it looks like you're forcing the 360 with your body. I didn't see any real heelside carve and it looked like you just went heelside at the last second and threw your body around.
You were on your heels, but there wasn't any carve which is why you have to huck your body so hard to get rotation.
Work on going into a heelside carve up the ramp and you'll find rotation comes a lot easier.
3) Look back up the landing
As others said, frontside 360s are blind landings, meaning you have to land looking back up the landing as you land the trick to stop the rotation, otherwise you keep spinning into a 540.
You shouldn't be looking back downhill until after you've stomped the trick and are riding away clean.
Last edited by Jed; 01-11-2013 at 12:32 AM.