Only when I'm posing for it, I learnt that towards of highschool with my school photos. My last highschool photo was me with such a serious angry pissed of face, and it worked out good ya'll!
I look better serious. I never smile for pictures. The fact that I hate my teeth doesn't help either.
Plus I have small kinda asian-ish eyes and they almost disappear when I smile and I get wrinkles besides my eyes so no.