"Do not judge, lest you should be judged." Luke 7:1
Though not religious myself, this is still fitting for the situation. Judging people based solely on appearance is a problem that people have, and should try to remedy.
Also, I see nothing wrong with a dragon tattoo, if you like dragons, why not get one?
P.S. As with most of your other questions, can you try to word them better? It makes it less confusing, and makes you seem less stupid.