Put 2 Mirror (similar shape and size), 1 infront of you and the other 1 behind you.
Put your self in between, take a look yourself from the mirror where your face and your eye is facing a mirror.
What do you see at The mirror infront of you and behind you ?
You still in between the mirror, Move your hand and/or any part of your body and see your reflection on the mirror. what do you see ?