What To Do The Day Of Your Tattoo/Piercing
Eat a big meal beforehand
Drink a lot of water
Avoid alcohol the day before and of
Don't take any painkillers (Blood thinners = more blood = more difficult tattoo)
Don't take any illicit drugs
Pack a drink (non-alcoholic), a phone charger, and cash for your tip
Wear deodorant, don't douse yourself in perfume or cologne. You don't want the artist rushing because they can't stand the smell.
Dress comfortably, and in dark colors to avoid ink/blood stains