Unless you are clear 100% of what you want, don't get any. Too many people get tattoos to get tattoos.
That is sick. If you got a variation of that with a red vs. blue dragon it would be even better. Yin-yang, balance of life, all that good shit. The dragon on my back is going to be opposite a mermaid...kinda taming the beast.
My shoulder. I might consider that. It would fit with the Ankh symbol, yes? Edit: At the same time, I don't know if I want to make it really colorful. But I would like to change something about it. Make a little different, so it's more original.
http://www.drblayney.com/Asclepius.html The Caduceus of Mercury (Roman) Many "medical" organisations use a symbol of a short rod entwined by two snakes and topped by a pair of wings, which is actually the caduceus or magic wand of the Greek god Hermes (Roman Mercury), messenger of the gods, inventor of (magical) incantations, conductor of the dead and protector of merchants and thieves. It is derived from the Greek karykeion = "herald's staff", itself based on the word "eruko" meaning restrain, control. It is interesting to see that most of organisations using this symbol are generally either commercial or military (or American). New Zealand examples include drug and pharmaceutical companies.