I use a few simple hand shapes when healing:

Palm Spread
Finger Point
Hand Cup
Seal Point

These hand shapes can be made with either the left or right hand, depending on personal preference, or the intuitive feelings you receive at the time of healing.

Sometimes you will use one hand, but very often you will use the two together around different areas of the patient's body. If using a crystal wand, you will sometimes use the wand on its own or together with one or other hand.

To give you some idea of what is visualised and produced I have illustrated the hands here