Space base layout session

I'm trying to figure out which modules goes where. I've simply been building modules without thinking about an overall plan. I also do not have a place to permanently display the build, so I occasionally drag everything downstairs and put it on the dining table.

So far, I've only managed to figure out that I need a lot more plain surface modules, with spacey craters and such things, to make it look like a base on another planet and not just a futuristic industrial zone.