oops =) noise node is set here to make random -20 to 1, thus cutting out nearly 95% of the "snowflakes" 0 to 1 would have, changing min value to lower (like -100) would make the snow even less dense, or higher (up to 0) makes snow more dense but its outputting values below 0, and transparency doesnt like that :) need math node to cut everything off below 0.0 value, then it works right add other nodes like fbm, turbulence, marble, etc you can add different effects to the snow, some areas denser, etc