I'm seeing a lot of smoothing errors, as you've already mentioned... they ought to be ironed out. I'm not too fond of the colors, either... purple was never much of a feddy thing to do, y'know? Cool ideas, though.
So, on the 'chore list', what I would suggest is:
a. Iron out the smoothing issues; this is the biggest nit-pick.
b. color scheme. Purple was never much of a feddy thing to do. For something like this, as an NX, I would suggest a yellowish/gold deflector, both primary and secondary. the warp coils ought to be a pale blueish-white rather than a pale purple; again, purple was never much of a fed thing... that's more the Dominion's area. I notice the hull is all sorts of shades of greens and purples... though very subtle. It's interesting, but again, not too feddy. Blues, greys, and whites, maybe. But purple... I'm not sure purple works.
Still! A good start. I actually kinda like the different hues on the hull... just doesn't work much for a fed ship, y'know? :3 This is all just my humble opinion, though. :] good work so far.
