Does anyone know how this works, or a website that explains it? It's more of an advanced astrology technique, which I haven't been studying much of lately. I may begin again.
Is it like matching your current natal chart with another that is very similar? Then your soul returns to the physical plain at the moment of birth that matches your souls purpose most accurately? Apparently that is what happened to Edgar Cayce / David Wilcock. He was born at the most similar point in the celestial sphere as Edgar in the time frame of 150 years, or something like that.

That's an interesting concept, but just off the top of my head I don't see how any sort of psychic reading for a past life could relate to one's present incarnation.

On further thought, it might shed some light on one's karma, but I don't pay much attention to karma anyway.

I would suggest you google "past life astrology"--I just did, got something like 314,000 results.

I don't quite understand this concept you're trying to get at. Do you mean how the Natal chart of one of your past lives pertains to you today, or what you can tell about your past lives based off of your current Natal chart?

I've been thinking. Maybe the reason that people with similar natal charts are so similar is because their deterministic energy fields [position on the Earth facing the celestial sphere upon entrance to the physical-plain-(the result of æther waves) creating a new signature that interacts with and is absorbed by the patterns and cycles of the Universe that are prevalent at that specific moment] are of a similar resonance.

We are like a clean slate at the moment of birth, as we transition into this world the energy signature is stamped onto our slate, and this signature determines who we are (reactions, hopes and dreams {in a way, but not exactly}, thoughts, tendencies, feelings, etc. . .), but it does not determine what we shall become. Whether we are born a peasant or a king, this signature is in us, and choices can be made in accordance to that signature and this signature and the next signature, but ultimately we are free to make our own choice (within the rules of the system we are making our choice in).

So maybe reincarnation per se, does not exit, but rather we are all parts of the waves in this ætheric substance, and we bond closely with other signatures of which are similar to our current signature, so in a way, that was a past life, but really, all you are is ætheric vibratory patterns and cycles. So actually there are no past lifes, because all lifes are one life.