first tattoo- any advice?

[mysterycolor]

so i am thinking about getting my first tattoo soon, to commemorate my 20yr anniversary of being diagnosed Epileptic. I am thinking about getting the Epilepsy awareness ribbon with "93" underneath.
Now ever since i started talking about this people have been giving their two sense- what locations are best, what colors arent good (i keep hearing purple is not good- which sucks because the ribbon is purple, is this true Donatello fans?)
since so many of you have tattoos (tmnt and otherwise) i thought maybe i could pick your brains for advice, personal experiences, what to expect... and then others can also check it out when they are feeling like i am... thanks in advance!