It's a fine shot: the kind of thing I try and usually fail to bring off.
If it were mine I'd convert to B&W, then go in with curves and try to raise the intensity of the brightest whites, without raising the lower white tones in the background. Problem is, there's snow on everything, and no matter what you do the snow in the background is going to come up too. The birch needs to stand out a bit more against its background. It'd be an interesting PP problem.