I made this post a while ago in the diorama forum but they said the armor one may know more.
I am making a winter base for my diorama. I used plaster of paris for the groundwork. While it was still wet i sprinkeled dirt onto it. Once that was dry i painted a 50/50 mix of white glue and water over the base and sprinkeled woodland senics on. This did not stick. What am i doing wrong. I am looking for a heavy snow with little ground showing through.