If you just want some tutorial or reference material, maybe you can just get some from a nearby bookstore? I assume that, since you're asking here, that option was not possible. i.e. there are none on nearby bookstores. Why do you want it from a Japanese manga teacher?
It might sound that I'm not trying to help, but I wanted to consider other options first.
There might be better and easier ways than contacting a manga teacher directly.