"The pavement has some oddities, but they're due to Posers way of making edges round, and I can't see any way to fix that." I've seen some discussions of a fix for the Poser "rounding" here in the forum - try a search on "split vertices" for the fixes described. As for the glass, here's the settings I use for windows in one scene. For yours, I'd think a streaked, dirty texture would be good in addition to the transparency. I think the scene is looking terrific! If the windows were aligned to the top of the door rather than the bottom, I think they'd look more natural. Add a worn, chipped looking concrete or brick frame to each the windows & door, and perhaps a rusty grill or two inset into the base of the wall, or even the sidewalk, and I think you've really got something. You might want to add an alternate brick texture so an 2 buildings can be positioned side by side for longer scenes. Wonderful work!