This is a bit of an unusual card made with a see-through piece of plastic from our window sheets. I use those sheets often for boxes and see-through elements on a card. This is one whole layer! There's a little fold piece in between it and the patterned paper which creates the mechanism allowing the window sheet layer to pop open. The video showing how to do this will post on my YT channel in a few weeks. I love the look of this unique card and how it stands beautifully on the mantle in all its glory!