Sounds like you're looking for more dark and abstract imagery. Find a really good black and gray (I assume) artist who specializes in this sort of thing and let them go crazy. I'll give some suggestions to give you ideas of what's possible. Don't expect to get in with these guys any time soon, most of them are legends booked years in advance. We can give more specific artists to check out if you tell us roughly where you live.
No tattoo artist worth his salt is going to just tattoo this on you. You need to give him your ideas, and let him draw it. Please, please, please listen to us. I don't want you to end up with a big old mess on your back.