I'm going through fundamentals of design next which is apparently lots of illustrator use (from what i've read in the course description)... i'm going to have to learn it to. looks like it's time to hit those tutorial videos. lol
In case you don't know this there's a general rule of thumb that if the edge of a block/building/whatever in a perspective drawing reaches a 90 degree angle at the corner (see the top of the tallest block in the top drawing) then it's actually distorted too much. This is all to do with representations of an imaginary circle of vision belonging to an imaginary viewer. It all gets fairly technical from there, but oh well!
Having said that, aside from the acute angle I mentioned this isn't bad! I need to practice perspective more myself.