You can see my shadow box on the right side of the photo.  My box measured 4″ square.  Here is the finished project:

This is the top, which I decorated as well.

The swan is a favorite photo that I shrunk down to size to fit inside the box.  For the fish and starfish, I stamped them onto plain white cardstock in black ink, then heat embossed them, colored each piece, cut them out, and pressed the finished side onto a Versamark pad, and then into a container of UTEE (ultra thick embossing enamel), melted the enamel, dipped it again in UTEE (three times total) to get the glossy shine.  (Here is a video on how to do this.)  I put rhinestones as eyes for the fish and a centerpiece on the starfish, and “bubble” stickers to mimic water bubbles within my scene.

The top of the box.  I painted the outside of the box, and lined the inside with leftover Japanese paper.

Side view

View from the other side.

Front view.

It was fun doing this shadow box, and I’ll probably do another one at some point.