It would've looked better if the artist had given it some perspective, made the buildings (and letters) look three dimensional. This looks "flat" and it's really a shame because the idea is EXCELLENT. Have a real artist look at this fixing this one.
I would add more shadding in the water to make it look more realistic and maybe I would put bolder colors in the lettering ( like take the colors from the american flag and sorta do a fade-in to each color working your way down).