I used this drawing 12 years ago when I applied for a job at Sea World. My future boss turned the picture over and over, and I asked him what he was looking for. He said he was looking for the pencil sketch marks. I said there were none, I had drawn the entire thing in ink. I got hired! :) Later on my boss taught me all about line quality, but I still appreciate the simplicity of this drawing done before I had more advanced training.