Well, usually this isn’t the main question as your dick is doing most of the thinking. If you have found a young, sweet, untouched girl, you are going to want to do everything possible, after all, you’ve come this far.
Now you will want to start slow, maybe push the head of your cock against her young, sweet mouth. Tell her to be a good girl and open wide. Now don’t forget, you need to utilize your accomplice too. Maybe she can hold her head and force her mouth open for you.
Although that sweet mouth gets your cock hard, it’s that tight, soft, little pussy that you are craving. Have your accomplice spread her legs so you can see that beautiful, young cunt. Maybe even have a taste first!
As your accomplice keeps her legs spread, you can get closer and start forcing your cock into that tiny, tight pussy. As it starts to go in, your mind will go blank. You will only be focused on that soft, tight, velvet glove that seems to be squeezing your cock. Her crying and begging may even turn you and your accomplice on even more.
By now, you are fucking that little pussy like crazy and are ready to blow your load so you drive it in all the way causing a scream from your victim and then you explode!
As you lay there catching your breath, your accomplice will want some release too. After all, she just watched you destroy a tight young pussy! She may rub herself to an orgasm before she starts the cleaning up.
This is where you both will decide to keep using her or discuss ways of disposal.