Hobbs, for a ship like this, don't add all of the detail at the same time. Start with one section (the saucer for example) clean up and smoothen (add more polies) the shape, then go to the next section. Don't try to hammer out a ship really fast. You design needs some re-work and it doesn't look believable. I like the overall design, but simply texturing it as it is, leaves room for improvement.
TNG ships are the most difficult to build for all of the curved and complicated shapes involved. Take your time with building a mesh and in the end, you could surprise yourself from what you accomplished.