The only critique I've got is that it feels like a tilt shift (small) and not a huge starship. Giving softer shadows and different lighting will help, as will adding more detail to the exterior and different parts like the top deflector dish through finer textures and greeble. Blender might have some extensions that help with the latter.
Lastly, having other small things in the scene to give it scale may help. I read that one thing that made the new Dune movies feel so big is that Denis has a person in every scene of something large, to give us the best reference we could ever have of scale. Can't really do that here, but in an orbit or dock scene you could certainly throw some basic shuttlecrafts or worker "bees" (like seen in the first ST movie) to have a taste of human size.
I've always loved the Miranda class and related.