Paintings are not always executed using a single medium: [[Henry Moore]], for example, used oil pastels and watercolours together, knowing that they would not mix. He would use oil pastel for the main features and then cover the paper with a watercolour wash, creating a bolder impression of the initial drawing. | Paintings are not always executed using a single medium: [[Henry Moore]], for example, used oil pastels and watercolours together, knowing that they would not mix. He would use oil pastel for the main features and then cover the paper with a watercolour wash, creating a bolder impression of the initial drawing. |