Work smart,Play Hard.

A great advice to keep in mind after getting the first shot of an interview is to write a follow up mail.
Here's an excellent article I came through which illustrates with a very detailed example - a must read.

http://www.businessinsider.com/the-number-one-mistake-people-i-interview-are-making-these-days-2012-2?utm_source=twbutton&utm_medium=social&utm_campaign=careers