Quote from FMPONE9 hours ago, FMPONE said: Models
Also, the idea would be that the sky will be darker than it is now, not that it's dark already.
I don't think the sky is the problem, imo you should increase the exposure of your lighting the make the snow whiter, try to crank up a little bit the HDR, I always had some great result with icy maps when I pushed the HDR to the limits.