Ok, I get it Paul. I was under the impression that your base lines up with where the hair starts. You actually have a gap of shaved hair between the end of the base and your growing hair starts. I thought the hair you had gave you a marker guide to where to apply your adhesive, but I guess you go above it.

So basically I can leave a tiny bit of my own hair in the back, but I have to make sure that the attachment point is higher up just below the occipital bone, and that the hairpiece hair is long enough to extend a little beyond the end of my own hair in the back