Understatement is always best. Bad analogies are like feathers on a snake. The passive voice is to be avoided. 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.
Don't never use a double negation. 24. capitalize every sentence and remember always end it with a period 25. Do not put statements in the negative form. Verbs has to agree with their subjects. Proofread carefully to see if you any words out.