Our third class was spent looking at the creative, improvised, making-it-up-as-you-go part of ritual and magic. We had a few exercises that allowed the students to express themselves physically, trying to communicate their ideas without words. Then we had exercises that allowed them to free-form write their inspirations down based on unfamiliar music.
What's the point of all that and what does it have to do with magic?
Communicating your ideas, desires, and needs to the universe does involve a certain amount of creative thought and expressiveness. Ritual is all about theatrics, especially in group situations. You need to be comfortable with yourself and your instincts so that you are not be bogged down by fear, second-guessing, and debilitating frustration when things don't go as planned.
So being confident in your abilities, being able to think on the spot, to go with the flow, and being able to improvise will allow your energy to flow more naturally.
Being able to improvise your way through a flubbed dance step is the difference between creating art and stumbling until you fall into the orchestra pit.