You need to make your own decision – tattoos should be (to me anyway) very personal and mean something to you. Browse the web, google images is your friend! Go to sites like deviant art and look around for inspiration.
I would say only get your tattoo when you have that ‘YES!’ moment when you see or think of a design that appeals to you.
There’s no rush to get one, take your time – you’ll know when you find the design that’s right for you 🙂