I don't know how to tell you this, but you have more than one tree here... I do like how you managed to get them all to line up for you, though. That's very impressive! I mean, I know you have a thing with trees, but who knew your power was this strong! (Nice shot, by the way!)
if you only knew where to find a single tree for the other challenge. :P
Edit: For this photo I wish the ground wasn't so bright so you had all the shadow detail in the snow.
All your photos have a precision in them: perfect framing; perfect position; perfect exposure; precision and order - in a flippant sort of way. I tend to the same. But we should now and again chuck that out the window and get some risk into the images we capture and compose... Van Gogh it or something. Maybe you know what I mean. Precision and order can choke. But I like, none-the-less and appreciate that much more after a bit of visual risk and chaos.