@HELMUT: I tried various treatments of the surfaces, but they just added a lot of noise; about the only way to greeble it without noise would be to hand-paint all of the surface elements, keeping them carefully aligned with the surfaces, and that, too, added a lot of noise without really contributing much.
Moreover, this is a
huge ship and it's covered with guns and all that:
There we can see some issues related to the presentation of the guns; they're feeling pretty flat where the guns are and it breaks the illusion.
I was irked with that, because otherwise it felt fine, so I added some sloped areas around each gun and some shadow where it was appropriate, which helped a lot:
Anyhow, in the end, I felt that a simpler presentation worked best; the chief elements of the design are the complex surfaces of the wings and body, and given what it's loosely referencing, it's probably best to leave it clean. There are lots of little details there, but they are subtle and don't contribute much noise.
Noise is not necessarily good design; sometimes it's better to let people see the forms rather than see flatness because of a bunch of greeble noise. Once you get to the point where you can do original ships, more of this will make sense