Sketch Up Design

The sketch up was inspired by this picture:

And here it is (finally):
I have yet to finish the lower layer, or the inside - so this is pretty much the shell of it.

Oh, and the materials are: glass for the top part (and perhaps the stairs inside?), the orange part is meant to look like copper but they didn't have that texture in sketch up so I used 'rusted metal', and the shell I have put as metal, but I'm still not 100% sure as to what it should be.