I did a series of large-scale artwork (5 ft by 6 ft) black and white paintings for the Amway Sports Arena in Orlando Florida a couple of months ago. (Home of the Orlando Magic) I sometimes do drawings or small paintings first to see if the image is going to work well. (You can see some of those paintings further down on the blog.) I was running out of paper so I drew this basketball image of a player dunking the ball on a map.

Art sport drawing Charcoal on paper map by sports artist John Robertson
dunking is 14" x 25" charcoal on paper