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Boing Boing on MSNHidden for 175 years: Photographer's mysterious "witch mirror" 3D self-portrait emergesFrench photography pioneer Charles Nègre created a 3D self-portrait using a "witch's mirror" - a clever piece of 19th-century ...
A great way to practise showing this is using white chalk on dark ... a mirror and a limited range of drawing materials, artist Emma Majury demonstrates the technique of drawing a self-portrait.
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