I do not envy you having to UV map all that, looks great so far though.
I like the render and texture, maybe too many horizontal scratches, but It will probably work when the whole scene is put together. I suppose you're going for the used looked, not a studio style job... which is cool.
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"Your weapons are no match for ours! People of Mars, surrender!"
"Um, this isn't Mars. This is Earth."
"Earth? Earth-with-nuclear-weapons Earth?"
"Yes."
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