Lip liner is very dangerous!!! There is a certain amount that is just right and many girls who use lip liner go overboard! You do not want a unnatural color unless it matches the lipstick or gloss you put on after some what. Lip liner tattooed on is common and may be okay because you can get a subtle look that lasts forever and becomes more natural looking. Do not extend your lips too much. Also don't create a drastic upper lip arch. Remember lip liner is to accentuate your lips and drag attention to them so if you do a bad job on them people will notice even more!