"Shoot the sheriff in the first paragraph."Good grammar and correct spelling are important, but what is even more important is keeping the reader's attention. Try to have something interesting to say.
TEACHER: Your problem is, you started your story on page 7. STUDENT: What? No I didn't — I started it on page 1. See? TEACHER: No, you started typing on page 1. You started your story on page 7.
"I made this [letter] longer only because I have not had the leisure to make it shorter."A target word-count encourages padding.