In general, write as a reasonable person writing to other reasonable people about something interesting. Good papers usually persuade readers that the writer is levelheaded. Be as specific as your purpose allows. It is difficult to strike the right balance between general statements and detailed ones. Try to choose the most specific word you can use without losing your meaning, and illustrate your meanings with examples.
Good papers make clear statements.
Try giving the paper to someone else. Ask them to point out parts they don't understand. It should sound logical and level-headed, not fanatical. Try reading the paper over with the attitude that you are a reader who has never seen the paper before. Use your handbook to double check any questions you may have.