When you come close to see those details in your face, the eyes, the nose and even the skin. You see a lot of stuff that we didnt know that they are there ! But what happen if you cover your face with both hand together ? then maybe you will see something for the first time in your life and you will see something that will surprise you for sure ! an expression that no matter how hard you want to make it realistic, you will still fail and only get the one expression that your mind will understand.