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Those paintings by artists who paint every blade of grass are often less complete than those who can depict many blades of grass by using one large well placed and well handled brush stroke. It takes very little skill to paint one blade of grass at a time. It takes a real master can create fields with just a few brush marks if they are handled just right. Look at John Singer Sargents work as an example.
The painting on the left is one of mine with very little detail but the painting was much stronger because of it.