If your a natural you'll under stand what i'm on about if not you need to read a book.

1. sense the warmth in your hands and start to feel the energy betwen then you should start to feel a tiny magnetic field forming. ( The longer you do this the more intense it it will get and the more focused you will become though remember we live here on a plaet called earth. )
2. Trust it is there and it is working, rotate hands like a pin wheel, or pretend to be an old steam train and the trust will enhance your being.
3. Seeing the light in your hand (third eye needs to be open.) the glowing will be your hand of light, this is what you will feed through into the part of the body that needs the healing.

This takes a bit of practice, unless your a natural of course.

Enjoy.

Books to read.
Hands of Light - Barbara Brennan.
A Healing Initiation - Recognise the Healer Within -Mellisa Hocking