The ship looks good! I think what you did with the hull paint added a nice subtle touch to detract from the toy-ish/plastic look.
I think that giving the various light blue windows a darker, more gray hue might be good. Maybe tone down the green features a bit as well... They stand out a bit too brightly in my fat-headed, egotistical opinion
... But, all in all I think it's a really cool work. The water effect is very nice!