achitect: Thanks. As soon as I get some more money, I plan on making a B-link order, and 1x1's will definately be on the list. As to the floor, thanks, I hadn't thought about that, and it's easily enough changed to grey, or perhaps even brown. I will have to rework it a bit to change the colour, because the main reason it's black is that the floor plates are part of the wall, unlike the 2nd story grey ones. But I suppose I can fix that in the same way. Thanks.
Footsteps: Hmm...I'll have to play around to get better lighting in there. If I back away far enough to use a flash, then the details can't be seen anyway, and if I come in to where they are visible, using a flash just whites everything. I have been using a powerful lamp placed right behind the camera, but I am by no means a photographer, so I don't really know what I am doing all that well. And outside shots are easily done. I'll play around this afternoon and see what I can come up with. Thanks.