Closing the Interview and Landing the Job
Move the process along to the next step at the employer's pace - not yours. The next steps could include another meeting with the hiring manager or other people, discussion of your ideas for a new project, or a proposal on how you would handle a certain area. The timing of your letter depends on the hiring manager's sense of urgency and personality. If the situation is urgent, mail or deliver your letter(s) immediately.
In addition, it is possible to influence the hiring decision by contacting anyone else who can help you. Think of the people (your references or mutual contacts) the hiring manager will most likely call for information. Call them, tell them about the position, and ask for their support by putting in a good word for you.
This may seem like hard work. However, how badly do you want the job? Every step of the interview process is an opportunity to make an impression. Create the best possible impression right from the beginning. It will be well worth your effort.