Spry,
What color paint did you use on the wall panels?
I bought a set of those wall panels and painted mine a blue/grey color - almost a Star Destroyer blue type color, since my photonovel deals mostly inside the Executor. But that blue color wouldn't work at all for a Death Star diorama/playset. Your grey looks good.
I absolutely love these laser cut wall panels, and am seriously thinking of making a mold of three or four different types of panels so I can make some resin cast wall panels.
Jason