It should be sincere and honest. Spend time and get your wording right. Tell them your qualities and why you belong in their Physician Assistant program. This is very important, make sure everything is spelled correctly. One misspelled word can ruin an otherwise perfect narrative.
Misspelled words are completely unacceptable.
Deadlines Make sure you get everything submitted on time. The best application will never be reviewed if its not received before the established deadline. Get your application packet from the program as early as possible for that application cycle. Get to work on it, no time like the present. I would recommend trying to get your application completed a month before the deadline.