Please note the following:
1. Make sure your torso sex doll has a vagina. This is the only way you can have sex with her. If she doesn't have a vagina, then you can't have sex with her.
2. You need to make sure your torso sex doll's vagina is clean. You don't want any bacteria to get into her vagina while you're having sex with her.
3. Before you start fucking your sex doll torso, put some lube on your penis. Lubrication makes everything go much smoother.
4. When you're ready to fuck your torso sex doll, put your dick inside her vagina. Don't worry if it hurts at first. Keep going until you feel comfortable doing it.
5. When you're done, pull out your dick and let your cum drip onto her belly.
6. Clean yourself up after fucking your torso sex doll.