Support beams! Duh! Those make the structure look a lot more realistic and add opportunity for interesting pipes, cobwebs and light fixtures. Thank you.
The past few days I have been focusing mainly on lighting, trying to get it up to an acceptable level, removing weird shadows, adding in some jack-o-lanterns and other light sources to make it seem realistic. Like I said, a lot of detailing to come.
But thanks for the ideas!
And for that painting in the back, that is actually hard to see from this angle, but its being stored there; it is leaning against the wall. Maybe I will flip it around.