I noticed that you only used 27kb of the 150kb allowed in the file size. The extra probably would have really sharpened this shot up. Nice composition and light.
Now that's what I call cityscape: the view is awesome. The buildings are arranged like the trees of a small forest or it looks like a small hill. Cropping is a little tight, but I guess that the effect mentioned above would otherwise be disturbed by bulidings on the left or right. I have a little problem with the color though. Too brown/orange to me. This is probably the result of the sunset, but because it's not obvious to the viewer, it feels somewhat un-natural. Still a great cityscape and the best example that cityscapes fit the challenge.