Project: Perspective

Being the noob that I am, I decided to draw a cathedral in a city (based off a St. Patrick Cathedral photo I saw). Project is supposedly for a group of 4, though I'm most likely gonna draw everything. >_> Due Thursday. -_- Sorry image is so dark, the paper is a huge poster (around the size of the ones you see at theatres for upcoming/showing films) and I took the pic with my camera in my low-lit room. Photoshop's filters didn't help much. :P Also, we're not allowed to use ruler, so don't nag me about that.