The one thing that you should definitely do after an interview is send a thank you note. Why is writing a thank you letters so important?
First of all, it's the polite thing to do, and, thus, it will leave a positive impression in the recruiter's mind. It is also an ideal opportunity to reiterate your interest in the position and mention experience or skills that weren't discussed during the interview.
You can also add in your desire to provide professional references to support your candidacy.