Haha ty... welcome to an artist's mind! Ok I'm using styrene modelling sheets for the build, the black stuff is foam board which I'm using for blocking out the main shape. There is the odd piece off kit bash from some Revell starwars kits I had lying around... they are the grey bits.You, sir, are a tease! If only you could download the image file from your head and post it here.....but then I suspect it would be a bit indistinct too.
What are the materials you're using?