When my artist does touch ups. I don't pay the usual hourly fee but I enjoy tipping and presenting gifts. Concert tickets, paper towels, bactine, & monster drinks are always cool. When working on a larger piece the idea of one and done dont apply. Waiting 30 days in between sessions allows my old skin to heal and the artist to see small details he would like to improve on. The process and the journey are great when you know the shop staff and your artist. As with most things in life..a little courtesy goes a long way.