While facing directly into the mirror,
just smile normally:
Do you have crooked teeth?
Do you have any noticeable spaces between your teeth?
Are you missing any of your teeth?
Are your teeth discolored?

Now, Look at Your Gum Tissue:
Do your gums "show" when you smile?
Are your gums healthy pink, or red and puffy?

And notice this:
Does your smile match the rest of your image?
What do other people notice about your smile?
What would you change about your smile if you could?