No human moderator is involved, your images remain private and are not shared with any 3rd party. What else could you want? This will move the image to your "Hidden" folder, and it'll stay out of any Moments, Collections, or Albums.
In your experiments you are free to choose from all of your pictures and from the images you can download on the Internet, maybe even from one of the tutorials of how to edit pictures to see through clothes. If you are long enough nude photos software shooting people, you can find some fun in the process: If you shoot boudoir pictures or nude ones, it gives you much more space, than before. Which clothes you can and which you cannot alter? Wired reporter Andy Greenberg investigated a web forum called Anon-IB where hackers anonymously post stolen nude photos.
Like any other skill, to see through clothes Photoshop needs practice. Answers to those questions come with experience, which sometimes takes months to practice and to master your skill. Your next goal is to select Masks and to increase the density in order to turn the edge that is rough into a soft one around the hair.