Where does QT get his characters from?

on the Jackie Brown DVD, the interview with QT and Robert DeNiro they talk about how they used to talk over the phone what Louis would look like, and they would say simple details like "would he wear a watch? Would he have a beard?"

i think it takes a shitload of time to create and develope a character and actually place yourself in the perspective of someone who you can’t possibly relate too

moviemaking is a hard job, im telling you