This is a simple energy exorcise that i do once per day.
First, get into a comfortable position.
Second, Create a ball of energy.
Third, Ignite that energy in your mind.
Finally, Focus on the energy, feel it. feel the heat coming off of it.
Great on a cold day as it will warm you a bit. but if you are expecting to produce actual flame, you will be sorely disappointed. This is simply an energy exorcise to help develop your skills.