Analogies in writing are like feathers on a snake. The passive voice is to be ignored. Eliminate commas, that are, not necessary. 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.