When I was a child I watched the most excellent show Commander Mark and the Secret City. Youtube now has my weird childhood memories available. Let's learn how to draw with Commander Mark:
Check out the secret city mural
I always liked his pseudo flight suit with pens and markers everywhere.
There is an ice cream shop in town with a secret city mural that is an entire wall. It has space aliens and weird stuff. I should take some pictures of that. Speaking of ice cream...