Sword Fingers and Thunder Palms are just two powerfull techniques for directing energy through your body. Each route supports energy of a different timber (quality). How you direct this energy and to what purpose is only limited by your imagination.
My experience of drawing in energy is coloured by my experience in Breathing the Universe. I like to stay with this exercise until I feel energy from my entire body being drawn to my lower dan tien with each inhale. Often I can only feel it a single location as I do the exercise, then my mind goes to another location until I can feel it then another and another. Then I expand my awareness until I can feel two places drawning in and directing energy to my lower dan tien, at a time. Then I add more and more. After about three or four specific places I just try and become aware of my entire body drawing in energy. It works for me. The heat of exhale unneeded energy is really powerful for me.
I don't always do the above sometimes I just relax and try the whole body. If I have difficulties, I go to the method above.
And if I don't have the whole body experience, well then the next time I will or the time after that. I had the experience I was supposed to have. I just remain confident that the energy was moving as my conscious mind directed, eventhough I didn't sense it the way I had in the past.
Doing the conscious work without expectation of what you should be feeling, while being confident that the results you want will be achieved .... faith. Stay with it and enjoy where you're going.
You are perfection.
Iam2