How to Write Good

1.    Always avoid alliteration.
2.    Prepositions are not words to end sentences with.
3.    Avoid cliches like the plague; they're old hat.
4.    Employ the vernacular.
5.    Avoid ampersands & abbreviations, etc.
6.    Parenthetical remarks (however relevant) are unnecessary.
7.    It is wrong to ever split an infinitive.
8.    Contractions aren't necessary.
9.    Foreign words and phrases are not apropos.
10.    One should never generalize.
11.    Eliminate quotations. As Ralph Waldo Emerson once said,
"I hate quotations. Tell me what you know!"
12.    Comparisons are as bad as cliches.
13.    Don't be redundant; don't use more words than necessary; it's highly superfluous.
14.    Be more or less specific.
15.    Understatement is absolutely always best.
16.    One-word senteces? Eliminate!
17.    Analogies in writing are like feathers on a snake.
18.    The passive voice is to be avoided.
19.    Go around the barn at high noon to avoid colloquialisms.
20.    Even if a mixed metaphor sings, it should be derailed.
21.    Who needs rhetorical questions.
22.    Exaggeration is a billion times worse than understatement.
23.    About those sentence fragments.
24.    Eschew profusely hyperextended or unwiedly verbiage.
25.    Breaking the train of thought, you must avoid dangling metaphors.
26.    Don't use no double negatives.

William Safire's Rules for Writers
Remember to never split an infinitive. The passive voice should never be used. Do not put statements in the negative form. Verbs have to agree with their subjects. Proofread carefully to see if you words out. If you reread your work, you can find on rereading a great deal of repetition can be avoided by rereading and editing. A writer must not shift your point of view. And don't start a sentence with a conjunction. (Remember, too, a preposition is a terrible word to end a sentence with.) Don't overuse exclamation marks!! Place pronouns as close as possible, especially in long sentences, as of 10 or more words, to their antecedents. Writing carefully, dangling participles must be avoided. If any word is improper at the end of a sentence, a linking verb is. Take the bull by the hand and avoid mixing metaphors. Avoid trendy locutions that sound flaky. Everyone should be careful to use a singular pronoun with singular nouns in their writing. Always pick on the correct idiom. The adverb always follows the verb. Last but not least, avoid cliches like the plague; seek viable alternatives.