What a good looking spiky :)
Moving a couple of steps to your left, if possible, would have given you more separation from the tree above him.
I see a slight magenta cast to the snow, easy ti fix in Color balance moving the magenta-green slider towards the green until it looks natural. A contrast boost will make the animal more visible in the snow.
Thanks for sharing, I love Elk!
Ditto the above. Would also suggest, (and I very rarely ever do this, :D). but a round of sharpening of the whole scene. Not too much, but it'll pick the snow up and accentuate the atmosphere. Normally, i'm a subject only sharpen guy. :D