Sims 2: How to stop my Sim from smiling when I make her?

So when I’m making my Sim, it’s hard to do her face structure and makeup when she keeps freakin’ smiling, I went and changed her mood to ‘serious’ to see if she would be more serious and quit smiling, worked for a few second, wore off, she she’s still smiling.

Is there a code or something?! Thanksss!