give yourself a TON of time to think about it. don't just think about how much you'll like it now, think about how you might feel about it when you're older. what about future employment? some places won't accept people with visable tattoos. when you think you've thought about it enough, put it off a little longer. then if you think you absolutely can't live without it, go and get it. my choice, smaller is always better. easier to hide and it will look better as your skin ages than something huge. tattoos are forever.