Adding the final details in the background using pencil:
Begin with the darker background elements.
You can use the graphite pencil to fill in the patchy texture made by the charcoal in the earlier stages.
Approach the image part by part, breaking down specific areas into smaller forms gradually.
See how the cut face of the ham has more detail now that I have worked over it with the pencil.
You can also use the pencil to create subtle transitions in smaller objects like the handle of the knife.
You can also use the pencil to darken and smooth those parts of the drawing that have a heavy amount of charcoal – like the darker bottles on the right.
Passing the pencil over these dark parts of the image with moderate pressure will shift and even out the charcoal dust, making for a smoother and darker look.