There is a website for MI UK where you can try your hand at a virtual tattoo. Its timed so there is a little pressure. I've only completed the first one and started the second one but kept going outside the lines and had to start over. Oh ya, you only get 3 chances to stay in the lines then its back to the beginning. It's a good time killer.

http://www.realtimetv.co.uk/microsites/miami-ink/index.shtml