Simply snowflakes.

I looked for interesting
snowflake-generating code,
but was generally disappointed
by what I found.
Nothing that I encountered in my search
made very good use of transparency
for depth, nor repetitive use of
arm generation within one flake.

So I decided to tweak my own algorithm,
to create some "dirtier" looking snow.

Exhibits two and three
are Photoshop post-processing.

Thanks to:
Fractal Snow for C# by Tomas Petricek
for an initial code framework, and
snowcrystals.com for the
great information.