The 19 Rules for good Riting

Each pronoun agrees with their antecedent.
Just between you and I, case is important.
Verbs has to agree with their subject.
Watch out for irregular verbs which has cropped up into our language.
Don't use no double negatives.
A writer mustn't shift your point of view.
When dangling, don't use participles.
Join clauses good like a conjunction should.
And don't use conjunctions to start sentences.
Don't use a run-on sentence you got to punctuate it.
About sentence fragments.
In letters themes reports articles and stuff like that we use commas to keep strings apart.
Don't use commas, which aren't necessary.
Its important to use apostrophe's right.
Don't abbrev.
Check to see if you any words out.
In my opinion I think that the author when he is writing should not get into the habit of making use of too many unnecessary words which he does not really need.
Then, of course, there's that old one: Never use a preposition to end a sentence with.
Last but not least, avoid cliches like the plague.