I'm not quite sure what to put on the bottom, between the little brown "cargo pods" or whatever they are. In the texture there's just a thick black stripe running down the bottom of the model there.
Edit: also, some of my uv-mapping and smoothing is starting to deteriorate. If someone would be willing to help me out, that would be great. This would mean: I send you a .3ds file containing the model (it uses the mediavps map, so no textures would be necessary). You clean up the uv-mapping to make edges match and such, and do some minor tweaking of face subdivisions to fix any lighting/smooth-groups issues (I know there are a few). Then you'd return a .3ds file to me. I prefer 3ds because Wings3D can import and export the format without losing smoothing groups, and it also can sometimes fix minor bugs in the model that get caused by mirroring or welding repeatedly, but .wings would also work.
Also, I need suggestions for what to do with a few areas. I'm going to post some images showing the areas I don't really know what to do with in a moment.

This is not very inspiring...

Neither is this...

There is another black area underneath the 'shell', I've marked the darkest part with that orange line in this image.

Here I'm thinking about putting some exposed 'engine parts' sort of details.

This might be a good place for something, but I'm not sure what the texture is supposed to represent.

These areas I've completely screwed up the UV map on.