Looking good G.
I think I might try and make the hull plating a bit more pronounced, but that's just personal preference, I don't think it would overly affect the look too much.
Also, I do think that some of the windows should be off. From what I've seen, usually only about a third of a ships windows appear to be on at one time. The Enterprise D always had most of them off iirc.
anyhoo, keep it up, it's looking good.