those are rookie numbers, you gotta pump those numbers up
jokes aside, its not a spelling bee. if you are writing intelligible sentences, typos aren't gonna get in your way. profs are human, they get that you're under time constraints and typing your heart out.
im not quite sure what this means. if you're referring to how you layout your answers (e.g. if you are using headings, if your headings are bolded, if you are italicizing case names, etc.), then no, it probably won't hurt you. however, the logical structure of your answer counts, and if your analysis on the fine points is strong but its all out of order, that will probably cost you.