I did not draw a chair. I know it looks like I drew a chair, but in reality, I was focusing on the empty spaces that border the chair and drawing the edges of the spaces. Think of it this way: I drew the white shapes' outlines and then erased the shaded background within them. And a chair magically appeared...!
Click the image for a larger view...
Next time: a hand drawn copy of a photo of my Grandma from before I was born...