To create a mirror that does not display a reversed image but one that is exactly like what other people see when they look at you, you’re going to need two mirrors. \
Take the two mirrors and place them together at a 90-degree angle. There should be no seam, no frame in the way. \
Also, that angle does need to be perfect. It can be quite hard to do this because the end of the mirror that meets the other mirror must be a perfectly straight edge that can fit flush against the mirror. \
You'll know if it has worked when you look at yourself and you feel a bit disoriented because you look a bit different. \