Well if yo want to know about your past life, there are many ways to do that. And you can do this through meditation, dreams and astral projection(traveling).
I would try meditation, start out asking your spirit guides for help and showing your past life. It may take some time and practice depending on how experienced you are with magick.
I would most likely use a Amythest stone, Amythest stones are used psychic ablities, and helps shows us prophetic dreams and lucid dreaming.
Take the Amythest stone and place it either under your pillow or in your pillow case on the bottom. You meditate before you go to bed, using Dragons Blood incense, this can be used fo rmeditation a lot. It will help you be more focused. Meditate for about 15 to 20 minutes how ever long you feel. Once again ask your spirit guides for help.
This should help you see at least one of your past lives. They say we can have many past lives.
I hope this helps you and is not too complicated to do. I have done it before and it helps me out a lot with dream work. Past lives i believe is also part of our dreams.