the colors seem a bit too red, and I can't really find a sharp point. maybe next time make the DOF from the man and the prop a bit more extreme, and sharpen things up after resizing
It looks like you've focused on the heart rather than the subject - a smaller aperture would fix this one. I do like the concept but the lighting is harsh on the subject (See the shadow from the nose) and would benefit from a reflector on the other side.
Hey Doc, the subject of the challenge should be in focus- not other parts of the composition. Without the plastic model, this photo with a tighter crop and sharp focus would have done very well, I think. The subject and lighting are great. 5
The heart is in focus, but the subject is not. And the heart is more colorful and more evenly lit than you are. Great idea and I like the lighting on you, but you just need to emphasize the subject more.