What is the standard on tipping your tattoo artist??

there is no standard, actually. In fact, a lot of places in Europe don't allow tips at all.

If you feel the need to tip, tip what you feel is appropriate. odds are you're going to be doing this in a few sessions, so don't feel like you have to tip a TON every time. Infact, as you get to know your artist, you may find that they have a certain thing they collect (my piercer collects old temporary tattoos for example) and you can try to get them something to add to their collection. Or you can just bake them a huge batch of cookies. Money is nice, don't get me wrong, but it means a lot to know the person you're putting a lot of your time and energy into is actually listening to you.

Anyway, if you want a "standard," 20% is usual for the US.

I would usually do 20-25%! For one that big I would do 25%!

First off, that shop is charging way too much and that's their tip. Half a sleeve for a grand? That's rediculous.

i always tip my tattoo artist, todd, 20% at least...as big as piece as you're getting done and if you like the work, maybe more

I gotta go with Chic... 5 for every 25 is good. (It's what I give the girl at the nail salon) so you're lookin at around 40 bucks.

5 bucks on every 25.

Nothing. They just gave you a permanent ink stain. You're gonna pay them?!