Illustrations clearly connect to purpose. Many errors in grammar, spelling, punctuation. Letter does not attempt to convince. 2 6-7 errors in format, grammar, spelling, punctuation. Letter is clearly written, but makes little attempt to convince.
Letter is fairly convincing.
No more than 3 errors in format, grammar, spelling, punctuation. Letter is convincing. I was difficult to hear or spoke too fast. I did not make eye contact with my audience. I showed little or no enthusiasm.