This is a medium favoured by professional artists because it is like dry painting: easier to transport and with much the same possibilities as watercolours or oil paint. However, you will have to invest in a good spray-on fixative to hold loose particles of chalk and prevent your picture fading away. Some artists don't like fixing their work because it sometimes affects the colour values, especially when the pastel is overlaid thickly, one colour over another. Instead, they shake off the excess pastel by tapping it gently, and keep putting on and tapping off until they get the result that they desire. Nevertheless, to keep it safe, the work will have to be overlaid with a sheet of acid-free tissue paper or put immediately under framed glass.
Pastels in greater detail
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