I am a sixteen year old girl, and I want to have a tattoo done on my upper arm. My friends initially told me to get a dragon tattoo done or a sword tattoo done. They thought that it would look something different, but then I wanted something that was cute and decent. Then while sitting outside with my friends, I spotted that I wanted to get a star tattoo done. How much time will it take for a star tattoo to be done on my upper arm?