How do you know if your smile is ugly/attractive?

Cyrus7V2
I feel like if I get too happy/smiley I show too much gum (like in my profile picture). Is that an unattractive smile?

Here is another one with less/no gum, https://i.imgur.com/sL75Cb9.jpg I'm on the right
How do you know if your smile is ugly/attractive?
42 Opinion