I asked the children to imagine that they were in the forest at night. Had anyone ever been in the forest at night? Some had and we talked about it. I talked about how I can see the full moon from my bedroom window, and how beautiful tree limbs (and everything) look in the light of the moon. We imagined that we were standing in the forest looking up at the moon, with the branches of trees coming in from all sides.
Some of the children used the crayon to shade their moon.
Then the children drew trees with black wax crayons, and painted some slightly watered down ultramarine tempera paint over it all.
To do the stars, cover a table with newspaper and load your brush with watery white paint. Practice tapping the metal part of the brush, (the ferrule,) on your finger. Tiny specks of white paint will speckle down. Are they stars? Are they snowflakes? You decide.