You probably won't bleed quite that noticeably from those piercings, if anyone was wondering. It could vary a bit person to person and due to other circumstances, like having alcohol in your system. I wouldn't recommend doing it the way Miyamura did, though. If you absolutely insist on doing it yourself at home with something like a safety pin, clean everything. Everything. Thoroughly. Your hands, the piercing location, the pin/whatever, the general area you're doing this in even. Clean it like you mean it, and follow basic after care instructions you can look up for different piercing types. Even a professionally done piercing can get an infection somewhere between getting it and having it for a while, and you will not enjoy the experience, so cover all your bases.