Maybe balancing elements, vein point, or depth
Hi!! Is this a question or just a statement? Sorry, I can answer it in the comments if it's a question but I don't really know if it is !! sorry :D
Romantic visual and literary artists glorified things which takes us to problem number two: the "things" they glorified were hardly ever physical.
They glorified huge, complex concepts such as liberty, survival, ideals, hope, awe, heroism, despair, and the various sensations that nature evokes in humans.
All of these are felt -- and felt on an individual, highly subjective level.
Hope that helped!! :)
I think its regarded as one of the world's best paintings because the art is pure, its creative, its a female as well and this shows that artists can not only paint things and men but also show the true beauty of women through art itself and I think what sets it apart is her smile. *also I take no credit for this art I'm not trying to steal it I'm just showing it