Just 'Soubi' is fine. [ 'Mr.' is far too formal for his taste. But he nods when she explains, taking careful note. It's common sense, for the most part--he can't teach painting before sketching, that sort of thing. But he knows he'll have to put more careful thought into it than that. ] That makes sense. And it would likely be smart to spend the first few classes on basic technique, I think.