I and several other TPE sex doll owners have pierced the nipples, navel, ears and other parts of the doll. Be careful, tear off the earrings and the ears will be badly damaged. I try to use the clip as much as possible. Also effective, but will fade/peel in time and may be faster than silicone. I am really happy to hear the punching work. You should do a tutorial about that sex doll. The only cosmetic I want is nail polish, and I occasionally change the lip color of a sex doll. I might skip this last, unless I find a good temperature that I must have.