I need some advice?

Umm Peircing your own belly is not a good idea. It's unsanitary and it could get infected. But if that's what you're going for try to use anti biotic cream like neosporin afterwards also wash it with unscented soap after. Now for the tools I really wouldn't know what to use because the the people from the shop use like a u shaped needle so it can curve. hope I helped...