Nervous Walter! It was quite a novelty to draw him this way. Also a novelty was drawing horses: I think they came out nearly as well as the ones my sister used to draw when she was thirteen or so.
I read Equus in college, I can't remember now for what class, and almost the only thing I remember about it is that phrase "striking at heads." It stuck with me for years -- waiting for Walter, I suppose. Go in through the eyes!