I've been considering this for years and have only barely looked into it, so I can't tell you much. The one thing that I have heard time and time again is to go to someone with A LOT of experience in eyebrow tattooing and to see a lot of pictures of their work. I also read that the color will fade (to almost a blue? color) and it needs to be touched up every couple of years.
Did you go to a tattoo parlor or somewhere else? Just curious in case I decide to look into it further.
Hope someone else comes along that can answer your questions