Started getting into lithophanes and didn't like the frames that the litho generators gave me. My idea with these was to set a tea light or some other small battery-powered light behind them. It's made with a 2x3 ratio so scaling should work as long as you match the dimensions. the walls on the left and right are not indented as the top and bottom are, so I would match the width measurement there. 

This is the very first model that I've designed with Fusion 360.  If you have any suggestions to improve the design please let me know. 

The model in the photos is an earlier version and has some design imperfections which have been fixed. The size is also slightly different as it was made for a litho I printed with odd dimensions.