If you are writing fiction, and you want to write about a character who does everything well (because you want to impress your teacher...*heh, heh*)...think again. Give your character a thing or two that he/she is not very good at doing--a flaw. Characters who make mistakes, and eventually learn from them, are interesting. Nobody's perfect, right?
Make a list of five mistakes you've made. Use at least one in a story that you write this week.