The Cleanliness of Tattoos

Make sure the place has a good reputation, perhaps check with the health department to see if there have been any negative reports against the shop.

 You could check for these:

Do NOT try to give yourself a tattoo. These not only turn out to look horrendous they are also are far more difficult to remove down the road. The color pigment are often released at irregular depths within the skin. You can also stand a greater risk of developing an infection.

If there is any sign of infection it's NOT a good thing!! For example: redness, oozing, streaking or the appearance of pus draining from the area. You should get yourself to a doctor right away if this occurs.