Nice job on the hull textures, though your grid lines are a little too pronounced.  But hey, you're not going for 100% accuracy.  Your weathering job looks very nice.
I'm amazed at how quickly you modeled that K-7 station!  Looks pretty good.  One tip: The raised hull sections should be like steps constantly decreasing in height from a central plate, rather than one high, one low, one high, etc.  But again, you're not going for 100% accuracy.  ;)