Beautiful! I love how you've captured the light on the mist, and you've framed the tree perfectly!
I'm curious-- have you considered making this Black and White? It looks like it would make a stunning greyscale (I would know, I saved it and converted it and it looks even better than it does now) and I feel like the blue/green colors take away the focus a bit-- the ground and tree are shades of grey-ish but the deep blue sky draws away the focus from the lights and the contrasts simply because it is the most saturated color in the piece. C: As I said before, I saved this and converted it to grayscale on my computer before writing this comment... take away the colors, and bump the contrast the tiniest bit and it really brings out the shades of light and contrasts between the illuminated and dark... and shows even more just how amazing a picture you have here! C: