Dude, it's easy. I've done this before with hookers. I didn't do the upside down head hanging off the bed thing though. I prefer the whore on her knees so I can watch. I also prefer to feel the whore's tongue under my cock. It's softer than the tongueless top of her throat which is what the bottom of your cock is rubbing against if the whore is upside down. The head off the bed thing is just a good camera angle because the whore's face is unobstructed, plus she ends up throwing up on her own face, which makes for a great shot.

The first thing the whore does when she comes over is she collects the money. Then she calls the agency to let them know she collected. Once that's done I'll offer her extra money to blow me without a condom. In my experience, $60 - $80 does the trick. The key thing is to convince her that you're clean and that you aren't going to cum in her mouth.

Once the negotiation is over, I focus on making her comfortable. I usually put on some music and offer her a drink. Then I'll light up a joint and offer her some. I'll talk to her a bit like she's a girl I'm hooking up with (as opposed to a sub-human meat hole.) This is important. Whores are nervous. They don't know if you're going to beat them, try to kill them etc. You want the whore to be relaxed. You want her to feel like there is chemistry between the two of you. If you succeed here she will genuinely want to please you and you'll be able to manipulate her.

When it's time to get down to business I just act like I'm in a porn movie. They know the drill. You pull your cock out and they automatically get on their knees. Let her chug cock for a few minutes and then just start fucking her throat.

One whore made me stop and said "I'm gonna throw up!" I just said "that's okay, I like that" and we were back in business. If the whore complains just do what the porn directors do. Tell her you're almost done, remind her that you already paid her and you're going to get your money's worth, etc.