Initial impression: Very pleasing to the eye, restful, the sepia tone works well. Managed to catch that sunset-to-twilight phase very well.
Technical: Great use of ambient light, composition has tree foremost and helping frame rest of shot so works well that way. The lights to the right add interest, and would draw attention away from a lesser tree.
Artistic: Love the calmness and strength in this image. Perfect example of KISS at work.
FWIW: Wouldn't change a thing. And you finished in the top 20 so well done, that's an accomplishment for any challenge! Very good work, keep it up.
Simple and calming. I like that it's a night shot, with lights, and yet so far removed from the normal busy modern city night scenes (not that there's anything wrong with those!)