I wanted to give these to some of my grandchildren, but they were a little too large and rather fragile, so I reduced them by 75% and added a single layer of white to the back. They are now stronger and should last for years of Christmases. I changed the snowflake model to print the snowflake with white, but have not added the white layer on the back, but have included it in the SketchUp file if you want to do that.
I printed them using a 0.25mm nozzle with 0.15mm layer height and 100% infill.
The author remixed this model.