Learning an approach to sketching these "entourage" elements can add realism and a sense of authenticity to your city sketches. They can also help balance your composition, provide an interesting foreground, lend a rich level of detail, and tell us something about the character and culture of the city you're in. They're equally applicable whether you're working on location, in the studio, or just doodling for fun.
Skillshare is like the Netflix of online learning. If you're already a member, jump right in! If you're not, the link below can give you 2 free months of access to all of Skillshare's classes (which is more than enough time to wade through all 3 of my classes there). I plan to add a new class to the series every 2-3 months.
Thanks everyone--I hope to see you in class!