I liked your idea, but I think that this might be a little too close up. I can't really tell what I'm looking at. The lighting is good, and I really like the colors.
Interesting DOF, but it's not really working for me. I think I would have preferred the focal point to be along sharp edge of the knife, not along the seration.
Interesting, but I can't really figure out what it is exactly. This hurts you I think because I can't tell if it really is something that ought to be kept away from children. Fortunately, I'm only commenting and not voting. I like your dof though.
Generally it's a good shot but I think a slightly different angle would have worked better. There's not quite enough in focus to pull this off. Perhaps if the focal point was lit more brightly?