Made entirely out of curves. Now you are thinking with curves.
It is Lyra Heartstring's lyre. Well.. it might be, I never saw her play it, nor is there any mention of her playing the lyre (lyra has no lines).
Lyra Heartstring's mark is two-dimensional? As your model is three dimensional and of varying thickness, I would not have thought you needed to mark it as fan art.
Yours is a nice stylistic rendering of a lyre.
It is actually worse. I am not modeling her 2d cutie mark. I am modeling the lyre she would have if she had a lyre (A lyre is never shown or mentioned in the show).
I thought about it and concluded it would be silly to mark this as fan art. I have changed it. Feel free to do whatever now.
I love this cute lyre and can't wait to investigate the curve work.
Why is it marked as fan art?