Aesthetically speaking, there's a contrast issue. Green leaves are often darker and matte, not glowing. Shadows are good to the extent that more contrast is needed and sometimes they add interest, and they'd help here. I think the thing that's least a matter of opinion is that it looks unlike what you'd see in nature due to the lighting, so whether you like the look or not, it gets a demerit for looking contrived.
The diffused darkness on one of the leaves could be from the curvature of the leaf with the light shining through it rather than a shadow. I can't really tell that there are two different kinds of shadows.