How to be Smarter: Be friends with people smarter than you. Learn from other's vocabulary, interests, worldviews and discussions.
How to be Prettier: Poor posture make you look chubby and lackadaisical. Pretend there is a string to the ceiling, constantly pulling you upwards.
How to be (less) Awkward: Instead of complimenting someone on their outfit, compliment them on their personality. Instead of "great shirt," try "you're so sweet to let me sit here!" People tend to reflect the comments you say back onto you, so by calling someone else sweet you portray yourself as sweet.