| I worked on the shading of the grapes, the stem, and the background.  I shaded more color and value on the purple and green grapes and then went over each grape with white to smooth and blend the color and value.  Then I went back in with the same colors to add another layer of color and reestablish the values. I also use the stump to blend and smooth the layers. 
 I worked on adding a background to the bottom.  Backgrounds can add interest and depth and help to clean up edges.  Typically I use colors from the subject in my backgrounds.  I do sometimes add other color, but I do so carefully and thoughtfully. When I change from one color to another I overlap the colors and blend them together to make smooth transitions.
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