Up until now, I've only done artwork for my own area of space. It was the planet shots I emailed to you some months ago. I had a rough outline of a type of story, I'm no writer though, but mainly I wanted to art. So if that's all you want to do.....that's it. Just say "This is my area of space, here's some images" and that would work.
If you wanted to do nothing more than an encyclopedia of your space, without trying to write a story with characters, dialogue, plot, etc, that'd work too. As Deslok stated, all of these things would be in the same galaxy, but never really need cross-over. If you wanted, you could probably get one of the writers to write up your ideas's into a story.
It's a multi-media universe with few rules on how to present your ideasempire to the rest of us. Again, so far I've just done some planetscapes, and havn't really thought out what to do next in Desloks story, but I'm working on it.