It appears that you have a chance to meet David Wright, get Mets tickets, and possibly watch batting practice from the field.
All you have to do is recreate your favorite Mets moment in a YouTube video. There are couple of rounds to the selection process, but the final round is apparently decided by David himself, so might I suggest you pick a David Wright moment to reenact? Perhaps the first home run at Citi Field?
Full details here.