How would you make the footsteps in snow sound either via synthesis or recording/sampling? I would prefer the latter.
I'm currently working on a Winter Kontakt library that will contains footsteps on about 16 different types of snow. Check this demo video here. You can go to my site and download a free footsteps patch for Kontakt. This "Female boots footsteps patch" is not the final version but a test drive version of the patch, so let me know.