I have been taking pictures for over 40 years. That makes me a guy with a camera. I have been a serious photographer for 10 years.
My philosophy is that photography should be FUN. Fun for me and fun for anyone around me, too. If you want natural expressions, look for fun. I'll take care of the lighting, exposure, etc.
My favorite quote:
"Imperfection is beauty, madness is genius, and it's better to be absolutely ridiculous than absolutely boring."