more zooming in or a smaller aperture size should have made a good DOF for this photograph! Believe me, a greater DOF should have pushed up this image to the top 20's because the carved stone and old rainy water(source=rain perhaps lol) is like a calm symbol here which is very good for showing off "in the garden" theme!
the dof in this is wrong i think. it just looks slightly blurred which is hard to look at. i think you should either have made it much shallower, or wider.
I think the problem here is that you didn't wait for the birdie! It would have made the shot if one came in to land on the birdbath. Crisp and clear shot otherwise.