Hi,
I'm having an airbrush trial over the holidays (wedding is in a different state than I live so I figured while I'm back for the holidays I'll see how my skin reacts to the airbrushing). I normally tip very well for hair/eating/anything but since it's a trial (and I'll have a second "trial" for engagement pics and then have her the day of the wedding) how much do I tip for this first trial? 10% 20%??
Thanks!!