Snow makes beautiful patterns in fabric. Below is a tutorial on how I use snow to dye fabric.
First, place at least one yard of prepared for dyeing fabric (PFD) in a dishpan or other type of tub. Fold it or scrunch it for more interesting patterns. Next pour one cup per yard, of prepared dye activated water to moisten the cloth. (To make dye activator add 1/2 c salt and 1/3 cup soda ash to 1 gallon of warm water.) You must use safety precautions when mixing powders, by wearing a dust mask or respirator.
Pour or squirt dye concentrate onto the snow. This time I put the dye concentrate into a squirt bottle (not spray bottle) and squirted different colors on the snow. I use Procion MX Dye powders. (When mixing the dye concentrate, always use safety precautions by wearing a dust mask. Nothing is worth risking your health.)
Have fun. Let me know how yours turns out!