MuchMoreThanMuscle saidSo, in essence, unless someone has gone through similar life experiences as I have we could say that my tattoos have more intense meaning that 98% of the population of people who do have tattoos.
I give people shit all the time for having tribal tattoos, mainly because I see large "tribal" pieces as a quick "I want a tattoo but I don't know what I want. I just want one to be trendy" piece that people get during drunken stupors. Or they want to express "something" but don't know what that "something" is. I've noticed that a lot of my friends that are truly into permanent body modification (implants, brandings, piercings, tattoos, scars, etc) feel the same way about our forms of modifications, and about tribal tattoos. We feel that modifying our body is a way of connecting our inner self / soul / energy / whatever-the-fuck-you-wanna-call-it, with our physical body. The scars / colors / tears that are left over are just our trophies we get to carry throughout the rest of our lives (well, that's the goal anyway). If someone gets a symbol with no personal meaning whatsoever to them, or they don't know what the symbol means, we consider it a bit of an insult to the body mod world. Sorta like some kid with anarchy symbol patched on his jacket while he goes to vote.
The tattoos you had someone put on you have an intense meaning to you. To everyone else, when they hear your story, your tattoos are a way to cover a scar. Realize that the meaning you put behind your tattoos are completely subjective and are no more or less valid than the drunken kid that puts an Asian symbol for "hamburger" on his back. I feel the same way about my tattoos and piercings; they each have a very special meaning for me. To everyone else, it is seen as either self-mutilation or too many holes in my body. There are some scars on my body that I hold dear to me due to how I got them. They have as much meaning as any tattoo on anyone's body.
The point I'm trying to make is this:
If you want a tattoo, but don't really have any personal meaning or reasoning for yourself to get one other than "I want a tattoo," then it really doesn't matter what you get. You could get a giant shit smear tattoed on your forehead. Regardless, it's not going to have any significant meaning for you, so getting it is pointless. If you have some sort of personal connection with shit being smeared on your forehead, and you want a reminder of it every time you look in the mirror, then by all means, tattoo that shit. But if you have to ask "What should I get?" or "Where should I put it?", then I'd encourage you to wait a few more years before you permanently modify your body.
As for the OP, I never answered your question. Most tattoo shops have tattoo magazines. In these magazines is some of the greatest work you'll ever see outside of bigger conventions. If you feel embarrassed about going into a shop to look at their magazines, many times Borders / Barns & Noble / etc will also have "Flash" or "Tattoo" magazines. Check them out; you may find a specific style you like, and can start your hunt for an artist based on the styles they typically draw. Check out the artists' work that have done items similar to what you are looking for. For example, I probably wouldn't go to my regular tattoo artist if I wanted a portrait of a person on my body. I'd go to someone who does primarily portraits, and cough up the extra cash.
tl;dr - don't put a shit smear on your forehead, make sure your tattoo has personal meaning, and shop around