I am retired from the Department of Homeland Security and did quite a few drawings for those nice people. As a matter of fact this one piece is still used in every major airport on a children's announcement in front of the TSA checkpoint.
A video of me in action... enjoy*
I find drawing is an escape, very therapeutic because on any given day you go to a place of preordained tasks. That is called a job. If you go out on the town with your best girly, it's prepackaged entertainment. However a blank piece of paper is your personal world. You can create and make it anything you want.