There are two types of people - those who get their tattoo on a whim, and those who think about it for months, or even years. Getting your tattoo without any forethought is usually a mistake, and unfortunately it is one that you will pay for the rest of your life.
But, if you are smart, and are looking for Pisces tattoo art, you can find the piece of art that you are looking for, spend time with it before you have it inked, and make sure that you are happy with the design before heading down to the tattoo studio to make it permanent.