Ah, good ol BME...how many hours have I spent looking through thee?
If you rub Vitamin E lotion, or even break down the capsules and rub it on the scar once you take it out and let it heal, it can reduce the appearance of the scar quite a bit.
And yes if you are going to get a piercing get it done at a proper place. Guns can't be sterilized, so essentally you're piercing yourself with the equal to a dirty safty pin, considering the earings they pierce you with with those guns are dull...
(Side note, if you're pierced properly you should not have a lot of scar tissue, yes you will have some, but not as much as you would if you had it done with a gun)
Sorry, my rant of the day is over