Ask HN: Misrepresented My Programming Ability in an Interview, Now What?

Just had an interview for a position I'm very interested in. I knew the position would involve some Python, which I use with some frequency. To give you an idea of my skill level, I was practicing context managers and decorators beforehand.

During the interview I was asked to take a couple of command line arguments and print them out in reverse order. I got all flummoxed and messed up some really basic things (like typing bash commands into the python shell, and using list.append multiple times in a row instead of just declaring a literal).

I'm pretty embarrassed about it, and afraid that I didn't represent my true ability. Is there anything I can/should do? I thought of emailing the interviewer with a link to some of my github projects, or something. Maybe I should just let it go?

Any advice here helps. Thanks everyone.