Very cool work author...IMHO she is a bit big compared with the rest of the image...also perspective of the laps is for few degrees wrong...try to fix that and this will be great...by the way great touch with adding foot steps in the snow...best of luck

She's way too big, and the perspective on the tops of the lamps is wrong. Good idea & mood, though.

Also, symmetry doesn't help this image, two identical buildings is a bit weird. Find one or some tries for one of the sides.

edit: I made changes. Thanks erathion, CMYK46 and greymnal for your useful suggestions. But I don't understand how can I make my lamps perspective better...tell me

well done!

From the angle at which the lamps are shot, I don't see what you can do about the perspective issue.

You could transform the lamps just a bit , so that those in the foreground appear bigger, but Make Sure you Don't split the image with them. Splitting image = failed composition.
Also make the far distance foggy, so that you can't perceive horizon, but just image it. Check works of ponti & arca if you don't understand what i mean. I usually do it with some scatter common brush on a layer which I gaussian blur. But internet has many tutorials, try them.
Last tip: since all your elements are vertical, image might be plain - try to tilt the snowfall, a few degrees.
You're doing good, and you're also the only guy with warm mood!