I see that you have chosen grass as your space, but take a look for yourself. Does the grass make that ornament WOW? and then ask yourself why.
I think that the grass if firstly too distracting. Perhaps you could have used a wider aperture to blur out the grass. And secondly, the colour of the grass if fairly similar to the shades on the stone and therefore not much contrast. Personally, I'd have liked to see you choose a different background. =)
Also, it would have been nice to see the ornament in the middle of the image =)