called past life regression and is usually conducted by a hypnotist rather than a psychic and the emphasis is on you being taken back to a certain time in your life.
The past life tarot reading is done in a similar way to a tarot reading the cards are laid out on the table and read in sequence. When I do a past life tarot reading I usually combine this with using my own psychic ability to link to the past life. I may see certain things in my minds eye such as what you were wearing in a past life, how old you were and get messages in the same way that I do a normal psychic reading.
Rachel Saxon writes for the metaphysical industry & is a reiki master. Recommended websites for further research Psychics Also Tarot Further information Psychics Also Psychic Directory