I've done a little bit more to the building - and whilst it doesn't look amazing at the moment, its been a great test bed:
I think it gives an idea of what I would be able to achieve in the future. I'm under no illusion this isn't show standard - but it gives me a good stating point for the future.
I have a bit of a problem in that I want a modern looking building but with very few buildings being available outside of engine sheds or "print yourself", I've made this:
The idea is simple - a 3 sided box with a lid, a window and set of glass doors. I've also added some supporting girders and some taller girders for a sloped roof that I'll be putting on top later this week.
The last thing will be I'll paint the roof a dark black and perhaps a second grey coat on the walls.