Fat over lean rule explained
The fat over lean rule is a critical method of working to ensure your painting stands the test of time. This requires that each successive layer has slightly more oil, and therefore is more flexible but it will take longer to dry. Each time you begin a new layer you must be sure the earlier one is dry. You can fatten your paint in one of two ways: by pre-mixing recipes of Stand Oil and Sansodor to add to your paint or by mixing directly on your palette. If pre-mixing recipes, you should make at
Botanical watercolour painting

Diane Hill London
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