Not an easy color to capture and you have done a wonderful job! The texture looks a little grainy rather than a smooth texture. Less lines and more overall saturation would achieve the smooth finish. There is a whitish line between the cast shadows and the eggplant which should not be there. If that is meant to be a reflected light it should be on the eggplant and not as white as a highlight. The reflected light is light bouncing off the surface and is not a controlled line. You are trying to create glow type effect. You might want to try applying an ivory pencil on the area that would have the reflected light and then adding a hint of purple or combination of colors you used for the eggplant skin, but not as dark.
Not an easy color to capture and you have done a wonderful job! The texture looks a little grainy rather than a smooth texture. Less lines and more overall saturation would achieve the smooth finish. There is a whitish line between the cast shadows and the eggplant which should not be there. If that is meant to be a reflected light it should be on the eggplant and not as white as a highlight. The reflected light is light bouncing off the surface and is not a controlled line. You are trying to create glow type effect. You might want to try applying an ivory pencil on the area that would have the reflected light and then adding a hint of purple or combination of colors you used for the eggplant skin, but not as dark.