Sorry but no.J90 wrote:A video or more pics would be very helpful.
But I think I understand what you mean. Drilling a hole through the skull (not the skin of the mouth). By pressure the skin of the mouth will slide a little bit in the hole. But I`m adraid that the sharp hole could lead to a tear.
Evidently you think the hole is to be drilled somewhere around the mouth. This is incorrect. It is to be drilled at the base of the head where the neck bolt is located. Perhaps you are following this thread on your mobile phone and you can't see the image I posted which shows you the EXACT location where a hole should be drilled. It's nowhere near the mouth. Their is NO possibility this mod can create skin rupture ANYWHERE on the doll.
I invite you to closely look at the image that was posted.