I don't have much. Most of what I've done has already gone into guild companion articles.
But I have done this for the Harp Sci-Fi adventure I've been writing. I've done enough work on this adventure that it is probably worth submitting to TGC once it is finished.
I don't really have much talent for art, but I'm not afraid to try a little. This one I had to do the hard way because of my lack of talent. I modeled the ship in sketchup, then created the back grounds one layer at a time.
I've got another couple of views I may use to create similar shots. The good news about using a 3-D model is that is it easy to create additional angles once you have it.
-Pyrotech