Hello! Nice work with these. You did a great job using hard edges to show the shifts in value. One thing I would point out to keep mindful of is the effect of the placement of the light values and the core shadow value. Typically when a darkest value is adjacent to a light value, it represents a sharper edge, which is why you use half tones to show a gradual shift or roundness. Even though we are only using straight lines for this exercise, we can still show a gradual plane shift by using the darker half tone to separate the light halftone from the darkest value. It will require some invention to design good shapes for this exercise, so thinking about the pear as if it was built by rectangular planes is a helpful.