I think it would work more effectively had you framed the shell to the right of frame, and allowed your primary shadow to fall into the left of frame, which would give you some balance across the image - here, the constant movement of the eye is out of frame, following the shadow, and that doesn't help maintain interest in the viewer's eye. Neatly done however.
I'm so glad I didn't do broken home now, I thought it would be origjnal too :( This however is a great, orignal take on it, well done. Great DOF and focus, good idea and subject.