To glue or not to glue, that is the question

[Little Cutie]

This is really looking good. I tried homemade snow with glue, white paint, and baking soda. Very bad decision on my part. That build is now on my "do not do this again" shelf.

I am sorry that didn't work for you. Some people simply paint over foam sometimes. Or you can glue and wait for it to set a little then sprinkle the baking soda over it. This usually works but practice until you get the desired result before using it on your model. I don't know of any other way honestly.