What Knowledge Do I Want

When I read someone who's a real master of the English language it seem they can get so much detail into so few words. I want to know how to explain something to someone perfectly without needing a whole page. I also want to know how to make someone feeling something using path, ethos and logos better. I also want to turn in a paper and get full points and be able to interest the reader every time no matter what I'm writing about.