Letter includes heading, greeting, body, closing, and signature. Letter clearly includes two or more facts as to why a person shouldn't smoke. Letter includes two facts as to why a person shouldn't smoke. Letter does not include two facts as to why a person should not smoke, or facts are not stated clearly.
Spelling is correct throughout the letter.
There is minimal misspelling throughout the letter. Misspelling is excessive. Punctuation is correct throughout the letter. Minimal punctuation errors appear in the letter. Punctuation errors are excessive.