There are a few things you should consider before taking the plunge. Putting thought into your new ink will result in a long lasting bond with you and your skin. Nothing worse than having something you are not proud of. It stays with you way too long for that.
Before getting your tattoo there are a few precautions you should take in making the decision on an artist.
Shop around for a studio/artist you can realistically travel to. Check portfolios of each artist's work you are looking at. Every studio should have at least one, either on display or by request. No artist should get angry or embarassed about showing off their past work, if they do, then there is no way you should continue with them. They should be proud of their work and ability and not have anything to hide. You should visit the studio a couple of times that you are planning to have your work done in. Meet the artist and talk to him/her. Do not be scared to ask questions. Any self respecting artist will be glad to answer any question you can come up with.
If you've found the artist you like but there is a long waiting list, Do not change to another who can do it sooner (unless you know they are the same or higher standard). There is a reason why the artist has a packed schedule and you will get a better piece of art if you stick with it.
Also check out the studio. Is it clean? Is it organized? Does it look like a "medical" procedure could be preformed? Cross contamination is a big issue for all artists. Not meaning everyone has a cross contamination issue, but sterilization and cleaning should definitely be on the top of the list of "things to do daily" If the client before you has the flu, chances are if the shop is not as steril as possible, you will be having the flu soon as well. Same goes with any other disease or infection. It is better to treat everyone as if they are contagious when it comes to blood bourne pathogens (aka infections/viruses/bacterias) than to take the risk of contracting something you really do not want. This may sound harsh, but it will keep you safer in the long run.
Now for the design. I cannot really help you with that though. Everyone has different taste. Something I like might not be liked by you and viseversa. But when you do find a piece you like, make sure you are willing to live with it for the rest of your life. I cannot stress that enough. Make sure that when you are old and whithered you will not regret having gotten it. Most people do not like hearing that, but I know my share of people who truely regret tattoos they have gotten.
Also, stay away from getting your girl/boyfriend's name on you. That is the worst tattoo idea you could possibly have. That person may decide they do not like you so much in the morning. If you insist on getting a name, make sure that you make it easily coverable in the future. I personally refuse to put signifigant other's names, as do other artist I know.