Here is an article that looks at tattoos from many different angles (no pun intended):
I have also uploaded a good article on modesty of dress, which I believe is related to the issue of tattoos:
I would suggest anyone who wants to get a tattoo to ask themselves this basic question: Who are you trying to please with a tattoo? God or the world? Those are the only two choices, and they are mutually exclusive.
And lastly, St. Paul tells us that our bodies ought to be temples of the Holy Ghost. Getting a tattoo is like graffiting the temple of the Holy Ghost.
It is so clearly explained how we must avoid defacing ourselves with tattoos and try to preserve the natural beauty given to us by God.