You've got some nice angles and stuff in there but I think you should ask yourself the "how would this actually be built" question a bit more. For example, would glass, even reinforced glass, support concrete barriers designed to stop cars?
Would someone really write the word RED in enormous vertical lettering on a bldg (ok these overlays just suck don't use them IMO)?
How would that angled section with the boarded-up window be created- surely they would have a runner at the bottom for those cut-off boards to be tacked onto. Also would anyone really spend the time boarding up a window so far off the ground, and how would they do it?
little things like that help a lot I think, but it really does look good overall