Looking really good, congrats on your finished city... if you'd like a little critique as well so you can get even better, I'd take a look at your work with shadows. They will normally be the darkest closest to the building so perhaps you can work with the curve of the shadow to enhance that. Also some of the shadows is not attached to the building and some of the bridges have shadows indicating that they are high in the air, which I doubt is the case. You can also tint some of the roofs so that they aren't all the same. It looks as photoshop bevels, so I'm guessing that might be what you use. . .if that is so, you can make a layer on top of the roofs, then ALT-click on the line between the two to get a layer that only affects what is underneath - that way you can work with a brush of color on a low strength to tint the roofs without painting outside the "lines" ... good luck on your work - and the campaign