How to be Smarter: In an interview, have a decent pen to use. Not like a white bic pen, but a substantial pen that has black ink (maybe one from your college's bookstore).
How to be Prettier: To look good, you need an iron and a tailor. And the ability to utilize both.
How to be (less) Awkward: If you catch yourself zoning out, don't just nod and say "yup." Take a second, and ask the person to repeat ("wait, can you say that again?" or "sorry, what?")