The card was made using the basic steps for a simple window but with a few extra steps. You can see a video for one of my Christmas cards that was made the same way here. I had a hard time getting the quick "movie" to play here, so if you'd like to see the card opening and closing, see it on my facebook page under "videos".
I cut out the swing, dog and bird using some dies that were made by Dies by Dave. You can see his store here. He makes dies that coordinate with lots of Stampin' Up stamp sets for which Stampin' Up doesn't offer dies.