When the Private show is over, you will see a pop-up window asking you to rate your experience with the model. You can also write and submit your review in the same window.

Additionally, you can leave your feedback on the quality of the stream's audio and video. 

Keep in mind that you can only write a review right after the show ends. It isn't possible to submit one later or change it.

Read this article to learn how to record a Private show.