Start off with a small tattoo and then work your way from there. Carefully choose every portion of your tattoo remembering that you WILL be stuck with this tattoo for a very long time. You may want to put several small tattoos together to make a larger tattoo or you could put a few large tattoos together to make a rather large, but unique tattoo to show off.
For me I often feel stuck when I think of how permanent a tattoo is. I see a lot of cool designs that I like at the time but when I start thinking about the having it permanently done I start to change my mind and look for something else.
90 Magnificent Elephant Tattoo Designs http://tattooadore.com/90-magnificent-elephant-tattoo-designs/
I've seen people use this guy too. A unique way to express is to write quotes in different languages on your body too. Maybe you can try mixing tattoos? Maybe mix several different tattoos in one type of tattoo?