Ok, this is my first request, and I'm more than a bit worried as to whether or not it looks "good". The man I'm doing it for wanted it to this description: a Martian colony, with 8 of these tube structures in a large circle, surrounded by fields of crops.
Now, I added a couple extra things, and I was just wondering what everyone here thought.
A single "module" (ignore the little lights thing in the front), this is also missing the docking tube and ring:

Another shot, now complete with the docking tube and ring:

This is the whole assembaly:

So what do you think? Good, bad, or horrible?