https://civitai.com/models/1361472/head-back-orgasm

Head back orgasm, sometimes also reffered to as arched back orgasm. It's very self explanatory.

Main type of image is head back with tongue out but you can also use "Clenched teeth" or "open mouth"

works with sex, masturbation, males, females, furry, non-furry.

Use at strength 0.8-1 for best results.