When I make an OC, the first thing I do is decide a name(usually using the amazing search engine called Google). Then, by using their name, I image what a person with that name would look like. It's quite fun, and I *might* take more time than needed by just switching out traits in my brain. From then on I start on their careers, and from the careers I go on to to personality. And then, I continue on towards family, and everything else!