One of the adventures of working with mirror is that its properties can be used in so many different ways. A shadow puppet escapes the wall to hover in space. The light of a lamp, painted white, places one form of illusion in the space of another. Images, half seen through the silvering, appear to recede, or emerge, Alice-like, from another dimension. Skulls, planets and butterflies can defy physics – or not – to float in mid-air.