Yup, I admit it, I totally copied this Hiroko bird cage pop up card from Canon Creative Park. I simpified the design quite a lot, redrew it, and made the whole thing about 25% bigger.
You can barely see the heart in the dove's mouth with the 90 (90!) on it. The heart is from a terrific site, the Toymaker.
Of course, I forgot to photograph this before giving it to my mother-in-law, so the pictures are from the party. Not the best.