Two point perspective is used when none of the structure's sides is parallel to your picture plain. In other words - you are facing a corner of a building, not a side.
You will start with drawing a HORIZON LINE, placing two VANISHING POINTS, and thed drawing the corner of the closest building.
Remember, that in 2 point perspective:
all vertical lines stay vertical
all horizontal lines go to one of the vanishing points
All windows, doorways, and other architectural elements shouldfollow the same rule. Look at the picture below: all lines are eighther vertical or go to one of the vanishing points.
A large part of the grade for this assignment is creativity. Build a cityblock of your dream! Make it fun!
Here are some examples: