one of the ways in which I look for past life "skills" is to look for the closest planetary aspect to the Vertex, by sign and house
also, I look to planets in the 5th House as well as the ruler of the 5th House, as well as planets in the House that corresponds to the natal Sun sign . . . these give very definitive "clues" as to what an individual is "naturally good at" . . . for most, this probably sounds like gibberish, but for an #Astrologer . . .