The best way is to send a post residency interview thank you letters cards to the residency program personnel which you interviewed or met with once you have done with your interview. The thank you letter offers you one last opportunity to leave a good impression and to jog the interviewer's memory. For ultimate outcome, do it twice, once directly after the interview and once just before the ranking time about early February.
3. Don't type the letter, this is not professional. You need to show them that you are a real person with perfect hand writing. Faculty will rank people with good hand writing on top.
NB: Pharmacy residency seekers are also welcome to use this format.