This was a card I made in a Rainbow class I took a few weeks ago. It uses the it's your birthday sentiment from the amusing set called "Holy Crap". This is a set that just makes you laugh.
For me these challenges are always fun and look forward to seeing what you will do with the challenge. You don't have to use Repeat Impression stamps but if you do, your name will be entered twice (2x) for a random drawing for a really nice gift certificate from Repeat Impressions. Check out Wendy's blog, The House That Stamps Built for the complete guidelines and link your project there.
You might want to check out what these Rock Star Designers have created to inspire you. Good luck - and I'm looking forward to seeing your projects.
Thanks for looking at my card.