hey, if you're looking for steampunk stuff, here are a couple links i found that hopefully can help bring some more ideas for your ship.
Crabfu SteamWorks
Steampunk - Gizmodo
Boing Boing: Steampunk Archives
How to draw Steampunk Machines
Steampunk Lab - Powering Steampunk Innovation
basically, when i think of a steampunk style, i think of of cogs/gears, tons of pipes, intricate and detailed designs on brass/copper plates, dials, knobs, switches and measuring devices. very old-school use of materials that would run on steam, but in a very technologically advanced way.
awesome stuff you have by the way. i love your environment props and buildings.