These little sets are designed for a card with three layers. The outside image also includes a tiny door die, that scores along the hinged edge so that the door opens, and you can see through to the other layers.
Here is the middle layer, and again the set includes the die that fits right in the middle of the scene.
And finally, here is the inner image! It's hard to capture how cute these cards are in photos - they're quite amazing in person. You can see all of the Art Impressions Mini TF's here.