Building...outside...argh, my brain is LEAKING

[Technocrat]

Bah, I take a two-month break from AGS for education, and I get back to find I've forgotten how to draw. I've been trying to do the outside of a cinema (on the left), old-style three sided ticket office and such, and have found my brain stuck when it comes to working out how to do a decent-looking exterior.

(the vanishing point is faaar off to the right, since this is going to be a long, scrolling scene)

Does anyone have any suggestions for how to make a decent sandstoney brick kind of look on a wall, or failing that, can anyone recommend me a good tutorial for this sort of area?

Merci beaucoup!