I really like wet / oiled body skin, of course, about porn. It makes the picture more exciting and have a greate sense of volume and 3D, but it is a very difficult to make this effect, if you don't put the white in the right places. Looking at many photos, I realized that unfortunately there isn't precise rule. There is not a picture with an oiled body identical to another, you have to go quite insightful and have a good eye because if you guess the exact place is amazing, in the opposite case, the woman will simply have white spots on the body. The goal is to learn how to find these points without photo references.
Meanwhile, I was able to create my own brush for the oil effect on the breast, and I must say that it very good (if used well).
Intanto sono riuscita a creare un mio pennello per l'effetto olio sul seno, e devo dire che rende benissimo (se usato bene).