IMHO this is a little two high key. I would like to see more detail in the snow. The trees by themselves don't have enough pop to make me say wow and the dark spots in the snow without snow detail looks awkward. Hard to expose well. Believe me I know.
TC
I love the simplicity here. Though, I feel you loose some tones and details on the ground. If it's because of the homogenic snow, I would crop a bit to avoid or minimalize detailless areas. Just an idea, anyway, I love the mood and the composition.
This is such a nice image but could have been a definite winner in my opinion if the crop took out most of the distracting spots in the snow in the lower third of the frame. Then the use of negative space would have been more powerful with the starkness of the black and white being accentuated. Just my opinion, but I am reaching for the crop tool as I look at this. I think it is one of the best shots in the challenge but could be killer!
Looks like there're four trees in this, but that doesn't matter at all. Graphical feeling works marvellously. The disparity in placing would be annoying but the fact the leftmost has "suffered" by the presence of better living bigger tree gives some needed tension. The image is positioned perhaps a bit too high, but still works well.