i think this is a fine skyline view, but i'm not sure this is the most effective type of shot for this challenge.
this is a great point of view of a city, but to me it doesn't say a lot about life within the city itself. the image itself is full of different places to look, but leaves the viewer without a single focal point on which to concentrate. perhaps trying to isolate a few of the more interesting buildings might have been better?
i would also try to increase the contrast of the image. the colors all seem very flat -- it appears that the day was kind of hazy anyway, but you can boost the range of tones throughout the image and give it a bit more impact.
It's a nice cityscape shot - nice early morning (perhaps late afternoon) colours. It doesn't really convey much about "City Life" to me though. Other than that it's a good photo - nice colour, brightness, sharpness, etc.