I wanted to do this old vehicle for a while so I set up there and did it. It had to be painted on location, and you had to post a photo of your easel, etc. This old international is in Plains, TX.
I started out trying to use oils but I don't paint enough with oil to know what to do, so I ended up using a sketchbook, and drawing it with my fountain pen and ink, then painted with watercolor and a little gouache.
