Tiffany posted this video on her YouTube account today:

It explains the entire contest pretty well. Buy the single, and take a creative MySpace pic holding the CD. Post it as a comment on Tiffany's MySpace. She puts all of the submitted pictures in a new photo album. One picture will be picked at random to win a prize pack featuring:
- signed single and posters
- Disney's Tinker Bell Soundtrack
- an exclusive TEAM TIFFANY t-shirt

Are you going to enter? The deadline is December 23rd!