Will Fly.: We could add these to Orwell's 6 Rules:

• Verbs has to agree with their subjects.
• Prepositions are not words to end sentences with.
• And don't start a sentence with a conjunction.
• It is wrong to ever split an infinitive.
• Avoid clichés like the plague. (They're old hat.)
• Also, always avoid annoying alliteration.
• Be more or less specific.
• Parenthetical remarks (however relevant) are (usually) unnecessary.
• Also too, never, ever use repetitive redundancies.
• No sentence fragments.
• Contractions aren't necessary and shouldn't be used.
• Foreign words and phrases are not apropos.
• Do not be redundant; do not use more words than necessary; it's highly superfluous.
• One should NEVER generalise.
• Comparisons are as bad as clichés.
• Don't use no double negatives.
• Eschew ampersands & abbreviations, etc.
• One-word sentences? Eliminate.
• Analogies in writing are like feathers on a snake.
• 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.
• DO NOT use exclamation points and all caps to emphasise!!!
• Use words correctly, irregardless of how others use them.
• Understatement is always the absolute best way to put forth earth shaking ideas.
• Use the apostrophe in it's proper place and omit it when its not needed.
• Eliminate quotations. As Ralph Waldo Emerson said, "I hate quotations. Tell me what you know."
• If you've heard it once, you've heard it a thousand times: Resist hyperbole; not one writer in a million can use it correctly.
• 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.
• Who needs rhetorical questions?
• Exaggeration is a billion times worse than understatement.
• The passive voice should never be used.
• Do not put statements in the negative form.
• Verbs have to agree with their subjects.
• A writer must not shift your point of view.
• Place pronouns as close as possible, especially in long sentences 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.
• Be careful to use the rite homonym.
• Proofread carefully to see if you any words out.