I liked it a lot, but the quality in that round was just awesome so it had some stiff opposition.
The effects are great. Little bit messy, but I guess that sort suits the sig's theme.
I don't like how you've smudged that building though, it sort of ruins the depth. If you haven't got any sharpening/blurring layers then add some.
The colours are great though as they create some atmosphere imo.
I like everything in this sig, but the depth could be even better.