I feel that you could have used the rule of thirds here by moving the camera higher so that the building was a third from the bottom, if that makes sense.
It's pretty intense, though! I really like the colours and the way they graduate from one colour to another almost gracefully, and yet... in a pretty scary way too, perhaps, what with the way it feels somewhat degraded, but that is just me. I can't say I am particularly fond of that shade of green as it reminds me of the swamp and stuff. o.O