Playing A Character That's Completely Different Than You

Sorry if the flair is wrong. I had no idea what flair to use.

I would like to make a noble character (I like the idea of nobility), and while brainstorming, sorcerers seemed to be the best idea for what I want. However, sorcerers rely on charisma, and I am not charismatic at all IRL, and actually consider myself socially akward. And while I know that you don't need the skills personally to do the skills, I don't know how I could effectively role-play a character that's good with people when I'm not. Does anyone have any tips?