People have different methods of healing, but the most important thing is to invite Jesus to come with his healing power. It is always God who heals, not us.
It is best to ask the person if we can pray for healing and if we can carefully lay hands on him/her. Then we invite Jesus to come with healing and wait. Then we ask the person if there is any change. If they are not completely healed, we can pray again. Even Jesus once had to pray twice (Mark 8:23-25).