Come to your appointment well rested, relaxed and well hydrated.
You should eat something before your appointment and not arrive on an empty stomach, otherwise you may have circulation problems. Also, bring a snack and something to drink.
Do not drink alcohol or take blood thinning medication a few days before your tattoo appointment. Hemophiliacs and people taking blood thinning medication should check with a doctor beforehand to see if they can get a tattoo.
Wear comfortable clothing that can withstand a few splashes of ink.
Do not schedule your appointment just before a vacation, if you are going to a region where your fresh tattoo will be exposed to strong sunlight.
If your workplace is exposed to dirt, dust etc., try to schedule your appointment during your vacation.