Okay.... this didn't turn out quite like I had envisioned... but I think I was able to salvage it.
Sponged the sky then embossed snowflakes with white pigment ink and white EP. However, it clumped up... alot...so many of the flakes were just blobs. I decided to just color over the worst ones with a dark blue Spectrum Noir marker which actually provides a nice color variation of several shades of blue. Then because the poor little penguin just kind of blended into the dark background, I had to add white gel pen highlights.
I am glad that I tried... and plan to try again in the future sometime and stamp fewer snowflakes to start with. I really have a flurry.