Remember directing energy through a table into your palm? The energy is directed by your consciousness and intention. You can direct it through yourself and into your back. This is the most direct method.
You can also use other visualization, like seeing yourself in a mirror and working on yourself in the mirror. You could see your energetic self infront of you and work on yourself.
If I am in a meditation I have often asked for Master Lin to help me and I have him work on me while I'm in a sitting position.
Just remember it is your intentions requesting the universe to direct energy. The universe will send what is needed to where it is needed. You sword fingers just helps to conduct the universal energy more powerfully.
You are perfection.
Iam2 
