I came across a sweet little tutorial the other day - A pop up tutorial by Lori Heiling, and just had to try it myself. A super cute little card that comes together very quickly. I like quick at the moment!!
I opted to put a belly band around the top of my card to help keep it closed, and used that to put the Birthday sentiment on.
Simply slide the belly band off and open the top of the card. Up pops a Birthday Cake! How cute is this card?!!