You don’t need to look good.
You don’t need to be on your best behavior.
You don’t have to dress a certain way.
You don’t have to worry about saying the wrong things.
You don’t have to apologize for your mistakes.
You don’t have to be prim and proper.
You can even swear, ramble incoherently, and talk with food in your mouth if you want to.
Let your hair down, say what you want to say, and do what you want to do.
The creative process is a not a job interview.