Please, allow me to give you an advice concerning not only tattoos but the whole range of human experiences: you can't think people will do something the way you would like them to do it, you must tell them how you want they to do it. We could discuss the possible faults of the artist for years, but that would not erase the fact that the tattoo will stay on your body and so it's for your own sake that you must tell the artist what you want and how you want it in the most detailed way.