What is a thumbnail sketch, and what is its purpose?

A thumbnail sketch is something you do to give yourself just a basic idea of what you wish to draw! its purpose is to help guide you into the finished product!

A: returning the ball before it bounces on the court

B.) what tasks you need to complete. this is because if there is even a little focus of what the world is doing, you are missing something that you need to be doing. its self discipline. by goggles you see, and be you goggles you are seeing you. no one else.