Working with Glass in the flame is all about heat control. From the first time you introduce glass into the flame your focus in on how to get this glass hot enough to move without making it explode all over (heat control). In fact every technique you learn is just another lesson on heat control. Even when you have mastered long lists of techniques you are still concentrating on heat control to combine them.
I always try to work with the glass rather then telling it what to do and I do this with heat control, gravity and very basic tools.