Sorry for the hand held photos - but these photograph the best when they are held shut! I used several scalloped and circular dies to cut my window, and then placed my little critters into the bottom half of the opening. I stamped the sentiments over their heads so that it would show whether the card is open or closed. Here are a couple of inside views:
There are all kinds of Minis available through the Art Impressions website - you can find them here. Happy stamping!