Contractions aren't necessary. Do not use a foreign word when there is an adequate English quid pro quo. One should never generalize. Tell me what you know. Be more or less specific.
Understatement is always best.
Exaggeration is a billion times worse than understatement. Analogies in writing are like feathers on a snake. The passive voice should not be used. Go around the barn at high noon to avoid colloquialisms. Don't use commas, that, are not necessary.