You can create your snow before or after you create the rest of your scene, but I’ve started of by setting up a simple backdrop of snow dunes against a dark gradient sky, on a 550wx400h pixel stage.
From Adrien-Luc Sanders, former About.com Guide
You can create your snow before or after you create the rest of your scene, but I’ve started of by setting up a simple backdrop of snow dunes against a dark gradient sky, on a 550wx400h pixel stage.