1. Don't use no double negatives.

2. Join clauses good, like a conjunction should.

3. About them sentence fragments.

4. When dangling, watch your participles.

5. Verbs has got to agree with their subjects.

6. Just between you and I, case is important.

7. Don't write run-on sentences they are hard to read.

8. Don't use commas, which aren't necessary.

9. Try to not ever split infinitives.

10. It is important to use your apostrophe's correctly.

11. Proofread your writing to see if you any words out.

12. Corect speling is esential.

[Comment: smart editors learn from their mistakes. But the smartest ones learn from other people's mistakes.]