M.S.
When I was 5yo, my mom took me to the dept store to have my ears pierced. However, this was before they realized how beneficial it is to have 2 people and do both ears at the same time. They got one pierced and I screamed so much they wouldn't do the other one. They took the one out, so I was back where I started.
Fast forward to age 11, and my mom let my aunt take me to have them done again. This time they did them both at the same time. A few months later, they became infected because I didn't know that I can't wear anything but real gold at that time. I had to take them out because the back of one of them had become embedded in my ear(on the side I slept on). I had them pierced again at age 13, and have now had them for 14 yrs. I didn't have any problems with scar tissue, and mine were pierced in the same place as before. But I'm one of those too that cannot take my earrings out for more than about a month or they will close up, regardless of how long it's been since they were done.
While I had my third time done at Claire's, I'd suggest a tattoo parlor as well. Or somewhere that the piercer has sufficient training and experience. I'm not knocking Claire's but I know the training given there for piercers isn't nearly as extensive as that given to piercers at tattoo parlors. If you are ever close to the Garland/Mesquite area, I'd suggest checking out Fine Line Tattoos on Gus Thommasson. I have a friend who is a tattoo artist there, and he raves on about their piercer. It's a good, clean place also. I had my tattoo done there even before my friend worked there.