1. Promotion! ~ you might have the best song out there but if you don't let your fans know about it, it doesn't matter. Reach out to your friends and fans on Youtube, Twitter, Facebook or in person. Give them the link to vote, they are the one that are going to get you to the prize!
2. Practice! ~ you aren't going to nail the song in one shot (ok maybe you will but just in case...). Give yourself a couple of test runs in front of the camera so you can judge yourself. Ask your friends what they think. And then hit the delete button and record the winning performance.
... more to come!