Don't use a big word where a diminutive one will suffice. Proofread carefully to see if you any words out. Don't never use no triple negatives. Stamp out and eliminate redundancy. Avoid cliches like the plague.
All generalizations are bad.
Never listen to advice. Take care that your verb and subject is in agreement. A preposition is a bad thing to end a sentence with. Anarchy should be the law. Everyone should be a non-conformist.