My girlfriend's friend wants to get better at giving blowjobs

My girlfriend's friend told me she wanted to learn how to give better blowjobs. So I invited her to my home and told her to practice with my cock. My girlfriend's friend enjoyed sucking my cock so much that she asked me to fuck her pussy doggystyle. After I fuck her doggystyle, she rides my cock and jerks off my cock with her big tits.