The fence in the foreground, which is in the dark due to the DOF, distracts from the main subject, and it also stings the eyes because it is very close.
Nice creative work that stands out with that interesting tool in the model's hand. The Victorian iron conservatory is a much more interesting architectural feature than to be so cut off from the scene. I would have made the cutout wider and included the other elements of this beautiful building. Especially the windows.
However, if you wanted to focus your attention completely on the model and the structure in her hand, then I will return to what I wrote in my first sentence.