Your getting there, but the reflection itself doesn't look right. What I've been doing is rendering the front, then rotate the camera around to the back, and look at the figure through the mirror, using the same camera (so the perspective is correct). Along the way I delete the mirror, of course. If you scale the image in the mirror down make sure you hold down the shift key so aspect ratio is locked (at least in PhotoShop). no fair making it thinner to fit in the mirror. I've been meaning to put a couple of mirror props in Freestuff along with a tutorial on the masking, but you seem to have that part down pretty good. Your mirror also looks very nice!