• Avoid run-on sentences they are hard to read.
• Don’t use no double negatives.
• Verbs has to agree with their subjects.
• No sentence fragments.
• Proof read carefully to see if you any words out.
• A writer must not shift your point of view.
• Place pronouns as close as possible, especially in long sentences, as of 10 or more words, to their antecedents.
• Everyone should be careful to use a singular pronoun with singular nouns in their writing.
• Steer clear of incorrect forms of verbs that have snuck in the language.
• Writing carefully, dangling participles must be avoided.
• Write all adverbial forms correct.

• Use the semicolon properly, always use it where it is appropriate; and never where it isn’t.
• Reserve the apostrophe for it’s proper use and omit it when its not needed.
• Avoid commas, that are not necessary.
• Avoid overuse of "quotation "marks.""""
• Don’t overuse exclamation marks!!!!!
• Hyphenate between syllables and avoid un-necessary hyphens.

• Do not put statements in the negative form.
• If you reread your work, you will find on rereading that a great deal of repetition can be avoided by rereading and editing.
• If I’ve told you once, I’ve told you a thousand times, resist hyperbole.
• Also, avoid awkward or affected alliteration.
• Don’t string too many prepositional phrases together unless you are walking through the valley of the shadow of death.
• Always pick on the correct idiom.
• Eschew dialect, irregardless.
• It is incumbent on us to avoid archaisms.
• Take the bull by the hand and avoid mixed metaphors.
• Avoid trendy locutions that sound flaky.
• Never, ever use repetitive redundancies.
• Last but not least, avoid cliches like the plague; seek viable alternatives.

By William Safire of the New York Times

Corrected Fumblerules

The Fumblerules of Grammar

• Avoid run-on sentences.  They are hard to read.

• Don't use double negatives.

• Verbs have to agree with their subjects.

• Do not write sentence fragments.

• Proofread carefully to see if you left any words out.

• A writer must not shift his point of view.

• Place pronouns as close as possible to their antecedents, especially in sentences of 10 or more words.

• Everyone should be careful to use a singular pronoun with singular nouns in his or her writing.

• Steer clear of incorrect forms of verbs that have sneaked into the language.

• Dangling participles must be avoided.

• Write all adverbial forms correctly.

The Fumblerules of Punctuation

• Use the semicolon properly; always use it where it is appropriate, and never when it isn't.

• Reserve the apostrophe for its proper use and omit it when it's not needed.

• Avoid commas that are not necessary.

• Avoid overuse of quotation marks.

• Don't overuse exclamation marks!

• Hyphenate be-tween syllables and avoid unnecessary hyphens.

The Fumblerules of Style and Diction

• Write statements in the positive form.

• By rereading and editing, one can eliminate repetition in his or her writing.

• Do not over-exaggerate in your writing.

• Do not overuse alliteration (using multiple words in the same sentence that begin with the same letter).

• Do not overuse prepositional phrases (phrases that explain the location of the subject).

• Always use the correct idiom (an expression that is peculiar to itself grammatically or cannot be understood from the individual meanings of its elements).

• Do not use dialect (writing the way people talk); use proper English.

• Do not use archaisms (words that people no longer use).

• Avoid mixed metaphors (a succession of comparisons that do not make sense together).

• Do not use a popular locution (slang word) just because it's popular.

• Do not be redundant (repetitious) in your writing.

• Avoid cliches. 

TLC