What should I get for my first tattoo?

I'm 16 years old with some thin(yet deep enough to not disappear) self harm scars taking up the top of my left inner forearm. I decided to have them covered up (which my mother is all for by the way). The tattoo has to mean something. My ideas were a crown, an anatomical butterfly, a dragonfly, two crossed arrows, or a small quote. ( Im up for new tasteful ideas, though.) Im not asking for anyone to tell me to wait, or say I'm too young because my scars aren't fading and I went through a lot when I made them so I don't want them to just disappear. I want something to represent my struggle with depression and suicide. I need tasteful suggestions and opinions.