Simply upload a video of anything - trick or no trick - by pausing the game and going to "Replay Editor".
Select Save Replay or Save Photo and upon the next prompt, upload.
You must be connected to XBL for this to work.
Edit: These servers have now been shut down - I'm afraid it's therefore UNOBTAINABLE.
Edit Again: Servers have been put back up, bravo EA!skate.Reel Servers Are Back Online [UPDATED]