Well, I was trying to do something like that, and managed to focus my energy in creating a floating blueish ball with a face called “Blob” who managed to help me do all sorts of things in my dream that I usually couldn’t… I just asked him stuff and he did… Like I even told him to call a friend of mine to try a shared dream and there she was, in front of me… I forgot to tell him to warn me that I’m dreaming next time, but tomorrow night I’ll do that! Hope it works… ;p