How do you smile with teeth showing?

Your mouth is still part of the smile but make sure in your eyes there is a certain look of what you feel,you can try these Innocence Amusement Excitement and many other types of emotions but just to add to your smile make sure that you keep you teeth nice and white personally I have cricked teeth but i am told i have a beautiful face and smile,just make sure your smile looks natural and practice in the mirror good luck