I personally think the tattoo looks fine, You can put a moon like others have said and it would look awesome. Also before they tatted you up, did you see the design on your wrist, the way it would look. When I go to my artist, they usually ask me to pick the design myself, the size, what exact location I want it on, also the reasons for getting the tattoo, but I got good history with my tattoo artists, also if this is recently done, you might want to wait a while, let it heal etc, may even look better.