I would strongly recomend getting it done by a professional if at all possible, but if you really need to do it yourself, make sure you wear sterile rubber gloves, and be very careful about not letting any of the needles or foreceps or anything get contaminated. Clean the area very well with bactine before you pierce it. And once you have it done make sure to be very diligant with the after care. Clean it a couple of times a day with dial soap and bactine. I know a couple of people who have pierced things themselves with some success, but its really easy to get infected so i would reccomend reading up on technique before you go through with it.

Good luck, and be careful...