I stuck with a simple white base and made the cards one layer for easy mailing. Here are some of the cards I made:
I just couldn't pass up adding a touch of bling.
Cardstock: PTI Stampers Select White
Stamps: PTI For the Graduate, Think Big Favorites #5 and Baby Button Bits
Ink: Jenni Bowlin Spice Tin, Memento Tuxedo Black and Rhubarb Stalk
Other: Rhinestones from Recollecions (Michaels)
Size: 5.5" x 4.25"