Avoid painting on large mirrors as far as possible. Besides being too heavy for framing, larger mirrors are more likely to break.
The technique of drawing an outline is the same as for glass painting though you might get distracted by your own reflection! To avoid this, sit at an angle so that your reflection doesn't fall directly on the mirror.
Also, using a solvent-based colour on a mirror painting usually produces a better effect. Allow five to six hours for the painting to completely dry up.
Always avoid wrapping your paintings in cloth or paper as the paint tends to stick.
Photograph: Tanya Munshi
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