I almost forgot I wanted to make a diorama card for Valentine's Day! It's a little difficult to photograph so I'll show you the top view first.  A diorama card is essentially three layers:  the back, and then the front and middle with a window punched out so that you can see all the way through or so that it looks 3D.

Here is the card straight-on.

I cut two sheets of card stock 8.5" x 3.5" and one sheet for the middle at 6.5" x 3.5".  This is another project that once you understand the basic idea, you can make any size you want.  Then just decorate and stamp how you like. 

Happy Valentine's Day!!