I love this! Your variety of snowflakes really makes this cake stand out. Are these all plunger cutters? I recognize the PME, but how did you make the others?

The others were made with celcrafts celshapes snowflakes, a hard plastic mold. It works not so easy, you need a good paste in the right consistancy, not to stiff, not to elastic...
I tried it a few years ago and it failed, but now it was working and the result is great!