OK so my boyfriend is going to pierce my belly for me I was wondering how much skin should be pierce?

Its bad enough that you want to mutilate your body. But whatever gave you the idea this was a do it yourself thing?? You are risking serious infection and possibly death. If you have to do this, get a professional to do it.

There are many blood vessels in this area please get a pro to do your piercing

I know I'm young I'm 14 I got my belly button pierced last year and from stories my friends told me and from my own opinion I really do not think he should pierce it himself unless he is a pro because it may not seem like it but a lot of things can go wrong even with a belly button piercing if you don't no what your doing