Nice critique. I love your improvements. I'm working on a few more buildings and I'll definitely keep your tips in mind as I go. Thank you.
I can't resist editing iso buildings. =)
Most changes are in the 2 top rows of windows.
You have 64 colors in there: that's 4 or 8 times too many! (I didn't address that in the edit) Don't create a new color each time you need one, instead try to use one already there. Change one if need be, only create one if absolutely necessary. Many of your (otherwise nice) greys and blues are so similar as to be undistinguishable. I only added 4 reddish tones, one of which I used for both light and rust.
You don't need all those inside outlines to be black, choosing lighter tones can be nicer.
Careful with the bright forward edges: they mean shiny material, which stone or brick usually are not. Ok for metal, plastics.
Be more consistent with light, esp when your mirror a piece. Light comes from the left side, this must show on details on the right side too, such as window sills or cornice elements.
Similarly, bricks or stones are intertwined at edges: can't be mirrorred.
The elevator shack is a bit weird: what material is it built with? Looks plastic. Door should recess. (I didn't change it)
Keep it up! ;)
I guess I should have prefaced this piece by saying it's going to be part of a larger compilation. Although, I do agree I need to plus up the environment a bit still.
The lack of door is because I'm cruel and I don't want any of my denizens to ever escape. Mwa ha haa haaaaa.
Perhaps this is the corner tower of a much larger building? Or perhaps it's highly secure, hence the lack of doors? :)
How do you get in?
Needs more gadgety stuff like satellites, antennas and aircraft light beacons on top. Not to mention just more detail in general for the concrete top. There feels to be an uneven distribution of detail, seems unfinished on top.
Love iso buildings too. I like your main colours, gives it a dark (gotham city) feel.
C'mon guys, the main door is obviously round the back ;o) but I agree, showing a door would add extra detail.
Roof shack looks like it's floating a little, think it needs a darker bottom line and some variation in some of the windows would be nice.
@Manupix - Cool edit, love the light in that window, and the walls and bricks look tidier. I'll let you loose on my new iso creations coming soon...please.