These shots came to us with the obvious extremely blue/purple wash. My goal was to desaturate and push the remaining blue/purple towards a very desaturated blue/green. From there I focused on luminance. Where could I stretch contrast to pull detail not seen in the before image. I wanted to separate mids from highs in the snow, and then really crush the blacks to reveal all the hidden detail unseen in the original. Then my favorite, vignette the hell out of it, obviously, which helps to add the depth and focus to an otherwise flat shot.
Same deal here. Danger was the goal. I knew there was so much detail to be revealed in the ice that just needed some love. Pushing the ice from light blue to dark desaturated blue/green, then isolating and pushing the gain from the mids in the ice while crushing the blacks really helped to make the ice look like dangerous sharp shards instead of just blending in.