On the edgeby
bormicComment by Harz_Joerg: Content/Composition
The content is of course very simple, but by taking the challenge topic very literally it fits just right. You also did chose a fully symmetric composition, which was a strong, hence good choice. There might be different interesting angle of view to the same subjects, but then it wouldn't be your image anymore. So you did a great job here.
Also the relation between the pea and the plate was well set by your cropping.
Speaking of cropping: that's of course one of the most important part in your image. It makes a great balance between the black and white part. Very well done!
Light is also set greatly. I like the variation of bluish greys on the plate and the same subtle variations of green on the pea. Also that any harsh reflections has been avoided has to be noted. Thumb up!
Only the black should be featureless (first I thought it was dust on my screen:)). Of course, pure black (as well as pure white) is one of the most complicated tasks.
Camera work -technically
Nothing special to mention here: focus is great (not much to focus though) and exposure excellent.
Digital Processing - Technical
Can't see anything special worth mentioning.
Fits the challenge
Of course it does.
Good luck for you further submissions.
Jörg