usually to add depth i burn (not too much) objects that are farther away while slightly dodging objects closer up. in this case i would just slightly burn the city and see how it looks from there.
looks pretty real whats the theme and yeah maybe darken some of the creases on his trousers with the burn tool and the shadows of buildings to create a lil more depth
Looks good. Agreed with others, you need to darken the city in the bg a little and lighten up the mood in the foreground. Z.
Great concept. Maybe Photo Filter or a black and white gradient map set on multiply with a low opacity will help you also. Definitely can be a great piece just mess around with it.