
Well, here we go, the finished Central City. Hope you like it! I’ve kept a lot of the curves and wall- and loop-type structures of the earlier design, but added an outer wall which I think helps contain and define the mega-structure really well. (At least, I like it!) And I know the perspective is correct because I built it in 3D using the same carea as I did for the walls.
Not that this is a 3D render. i mean, it started as such - so did the wall-scrapers on the sides - but I’ve done all the coloring and detailing in Photoshop. So here’s the trick: I rendered it with 2 textures, one covered with horizontal stripes and the other with vertical. I bring them both into Photoshop as seperate layers, and superimpose them on the city whenever I need horizontal or vertical guidelines to sketch details. What’s more, I can load the selection of one, and then load the other’s selection as a subtraction (or intersection) and get an interesting pattern of dots which I just fill in to make lots of windows. Keep loading these selections, scribble over then, and I get lots of orderly dot- and stripe patterns very easily. Other parts are just completely painted by hand, like the tower-tops and docking bays.
Daniel - Ah yes, the negative space at the bottom. I have some ideas, but nothing really solid yet. But if anyone has any good ideas, shout them out!
Linda and Lisa - Yes the characters are all running together a bit. My last pass will be yo accentuate various lights and shadows to help them read a bit better. But I just have a few more important things to hit first.
Mark - Interesting point, I’ll see if I can address it like you say. If not, well, I guarantee you your money back 100%. 
Everyone else - Thank you for all the notes, sorry I don’t have time to respond to each one separately. So one big Thank You to you all!
Back to work now: Still need to work on the ships and the negative space at the bottom. (Hmmmm…)