Mirrors flip the image, so the way to get a correct self portrait using a mirror is to flip the camera around and use the mirror to correctly frame the shot. Here's a picure of me taking a picture of myself using a mirror. I'm using the Toon Vision app to distort my natural good looks...

@sid9221: Yeah, I want to know which one I REALLY look like.

@Victor V.: You should have probably seen that stuff in high school biology class.