Surface and Techniques
The surface chosen for oil pastels can have a very dramatic effect on the final painting. Paper is a common surface but this medium can be used on other surfaces including wood, metal, hardboard (often known as "masonite), MDF, canvas and glass. Many companies make papers specifically for pastels that are suitable for use with oil pastels.
Building up layers of color with the oil pastel, called layering, is a very common technique. Other techniques include underpainting and scraping down or sgraffito. Turpentine, or similar liquids such as mineral spirits, are often used as a blending tool to create a wash effect similar to some watercolor paintings.
Read more about this topic: Oil Pastel
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