Paul, post your process sometime man I'm sure we'd love to see the approach.
Oh btw! Your brushes are very fun to use, though a bit hard to figure out since it was clearly tailor-made for your approach. I ended up reverting to my hard round set most of the time Hopefully your process work can show me how you applied them!
Great atmosphere here, and I love the focus on the graffiti rather than the action in the background - makes it somehow more interesting, not to mention unique. This is probably my favorite piece from you so far. Can't wait to see more.