Oh dear. It seems that I dropped away from posting for much longer than I should have done. Sorry about that.
I haven't picked up a paint brush since finishing that pair of Fatties, as I've been doing a lot of test printing for Kathy Millatt's kickstarter campaign. I've also been doing a lot of design work for the Peach Trees terrain. I think I've now got the atrium walkways as good as I can get them now - I just need to adjust the positioning of the OpenLock clip holes and make some minor changes to the corner pillars. I've also test-printed enough sections to do three levels of one side:
I noticed that without the apartments behind them, the walkways sagged a bit so I quickly designed some support columns to hold them for these photos. As it is 1m (40 inches, actually) wide I found that the only space where I could actually take the photos was on my kitchen floor, so the lighting isn't as good as it could be.
A lot of research (and trial and error) has gone into these - finding images online, realising that there aren't as many showing what I need as I'd like and then capturing screen-shots from the film to get more images.
For the atrium corner sections, I think I might make sense to do them as 8" x 8" tiles (8" x 9" for the ones where the parapet sticks out beyond the pillar).
The next stage of this project will be to design the apartments, shops and other bits that are needed. The first stage of that will be to create the repeated elements like wall lights, entry-phones and such.