The passive voice is to be ignored. Eliminate commas, that are, not necessary. Parenthetical words however should be enclosed in commas. Never use a big word when a diminutive one would suffice. Use words correctly, irregardless of how others use them.
Understatement is always the absolute best way to put forth earth-shaking ideas.
Tell me what you know. Puns are for children, not groan readers. Go around the barn at high noon to avoid colloquialisms. Even IF a mixed metaphor sings, it should be derailed. Exaggeration is a billion times worse than understatement.