For the glaze I added some clear base and a bit of water to make it flow, then slopped on a coat of the grungy, dark brown and then wiped it off judiciously with a soft towel. The building instantly came to life. Every crack. crevice and bit of texture suddenly became evident. The building looked like it had been there for a long, long time. I still have to add the lettering on the two small signs.
The plexiglass windows still have to be glued in and I'll be installing some LED lights to make it look like the building is occupied. Stay tuned...
-dan