I know FLUX supposedly can do facial expressions, but usually I end up with a sort of smiling face. I’m adding some more easy to use emotions. Use these as trigger:
angry facial expression
sad facial expression
loving facial expression
scared facial expression
pouting facial expression
surprised facial expression
painful facial expression
crying facial expression
happy facial expression
silly facial expression
disgusted facial expression
aroused facial expression
flirting facial expression
seductive facial expression
provocative facial expression