Hi
Floral and cherry blossoms always work as they can be added either as a main piece or a small trailing piece that accentuates the tattoo.
My other thought is you could have a single feather floating below the name and maybe add the heart into the wing.
The letters are a little small for colour to do it justice but that said you could as suggested add some shading and highlights that will make it stand out so much more.
Take Care
Matthew