I'm not sure anyone is really qualified to teach dreaming. The other name for dream practice is "day and night the same." In my own practice I have been experiencing a mind-body sensation that feels like dreaming. It first started in my kua (hip area) and has spread to my entire body. Sometimes it is intermittent, and sometimes it is only a portion of my body. So it has become a measure of "good" practice that my entire body feels like it is dreaming. Perhaps I could describe it as being outside of time. Another characteristic of this "dream body," is that when I want to move, I move the environment around me. I just think, "put the house behind you," and my body turns away from the house. The sensation I get is a sort of short cut to doing what I've already been doing. In that sense it may simply be the integration of new material. But it feels deeply familiar. Dream-like.
(Here is a post I wrote in 2007 on Tai Chi and Dreaming)