Here's a lovely note I received with a Paypal message from a client I just pierced. She got a VCH piercing:

Elayne, I was experiencing a bit of a "high" today after my piercing, and I forgot to tip you for your work! I'm embarrassed and sorry. It was a pleasure meeting you, and I'm thrilled with all aspects of my experience today. You made me feel comfortable and cared for. Thank you again. Joanne