Now for a little pain. Leaving her blindfold on, take her restraints off, and guide her so that she lays across your knee, with her arse sticking up in the air. Time to give her a spank. Start reasonably gently, but ask her if she likes it, and ask him if she can take it harder. Ask her to beg you to spank her. By using this strategy, you should be able to get to a level of pain she is comfortable with, without causing any damage. In arousal, she will be able to take a lot more pain than usual, and he’ll probably find it turns him on even more.
Alternate between slapping her arse and gently slapping her pussy. Occasionally give her pussy and clit a stroke, and then return to the spanking.
Once you’ve had enough fun like this, for as long as you want; the longer the better, click next.