|Hello from the Critique Club!
I think this is a great abstract image. Its nature fits the challenge quite well and I really like how its look was achieved.
Lighting: I like the lighting here, it really helps highlight the egg, which in turn plays off the black cup & saucer and creates that optical illusion/abstract image. I do wish the light was sourced more in the top area so the shadow would fall on the cup/saucer at the bottom helping them to meld together and further that illusion. I also think if the white of the background matched that of the egg more, possibly done with more light, the correlation between the two would be smoother and trick the eyes even better.
Composition: I love the ingenuity here. I don't know if this image had a reference from a similar shot or not, but it has been pulled off very well. I love the use of everyday items to make this very abstract look which has such a nice visual impact. The color coordination is good - the black & white's innate starkness really helps further the image along.
I do wonder if the egg was positioned just a little bit more to the left so it didn't eclipse the side of the cup, whether that would make the visual impact a little more dramatic since it would play up the current illusion of an oddly shaped black stone or circle with a hole in it.
Focus: The focus is where I have a little bit of trouble. There is nice sharp focus on the egg and the top of the cup, but that seems to give the curves a sharpness that looks a little unnatural and detracts from the abstract illusion. I also think because the rest of the image then falls into a soft focus (macrostyle) this lends itself to a 'dirtying' of the image where it should be crisp and clean. I agree with a previous commenter that this would have much more pop if the white & black transitions were smooth and add in that a crispness of focus may help that happen.
Over all I think this is a well-thought out image and I like the abstract nature coupled with the interesting way you brought it out via your composition. Well done.