These are extremely helpful techniques summarized in a single spot. I especially feel the use of compliments is an important ingredient that is often left out. Your sample questions and comments are excellent!
The challenge I find is that many folks aren't really at the stage where they think they can be great or interesting; they struggle with simply just feeling they are competent. For these, they need help with their emotional state as well as mental one. Moreover, some personalities just don't want to be the center of attention. They prefer to listen and learn.