How to do a limb leg trick?

Hi, can anyone help me? I can’t figure out how to do a limb leg trick. I can still see my character’s legs when I put a leg overlay. My MC is a girl and she’s kissing this guy and I need her leg wrapped around him. (hence the overlay). Can someone please help!

Huh?

What position is your character supposed to be in? Could you send a screenshot of how it is currently?

Closed as per Op request