Choose your reincarnation.
Royalty: Will be reborn as a member of the Targaryen or Baratheon royal family with no memories of your previous life or the plot of the story. Can choose 1 uncommon skill or 2 common ones e.g farmer a completely useless skill for a royal to have and won't have any chance to utilise.
Noble: Will be reborn as a member of one of the many noble houses and knowing you had a life before this one. Can choose a rare skill ( Sorry can't think of any examples ).
Peasant: Will be reborn as a peasant with all the knowledge of your past life but no idea of the plot or story you're in. Can choose a epic skill e.g Swordsman will need time and guidance to achieve full potential but will become skilled with a sword faster then most.
Slave: Will be reborn as a slave with all the knowledge of your past life as well as knowing the plot and story you're in. Can choose a legendary skill e.g Battle master naturally gifted with any weapon/unarmed combat won't need any guidance to achieve there full potential only time.