i like the look, may i suggest a slight camera tilt so you are looking from slightly below, that should make the spires loom above. also maybe a mist line, or flare from setting star along the horizon to blur the sky/sea divide. 
i like the lighting, makes the textures glisten nicely. and for me the bottom looks cool, as if its the industrial foundations, holding up the gleaming top half. maybe a few small flying craft buzzing around.

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