Looking for Card Pattern - "Magic"!
 

I saw a card at Regionals and am looking for a template for it. It is made with a window (this one had the Princess in the window) and when you open the card, a panel slides over and it says "Happy Birthday" - covering where the princess was. I think the pattern involved using a punch to make the window in it and and more than one length of paper (when it was unfolded to show the "guts", it was longer than 12" so I'm assuming there are two pieces). Any one have any idea where I can find this???
TIA,
Wendy