Assignment Guideline- Do a series of sketches based off of old "wonderful" Paris streets and roof tops.
Start with one point perspective and do numerous thumbnails! Move that horizon line up high and down low!
HAVE FUN! MAKE IT FUN!
It is not the assignment that is boring, it is you that is being boring!
(It is not your first thumbnail that is important, it is number 26, ot 31 that gets you there!)
Start to gather some of your own reference!