Etape 1Find a concrete wall and ask the owner for permission to display your work. 
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Etape 2With the marker, draw a surprising subject that fits well on the wall, for example, using marks already there. 
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Etape 3Cut out the outline of the design and remove any white spaces that are not part of the design. 
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Etape 4Mix 1 spoonful of cornflour with 5 spoonfuls of water in a glass.
Place this mixture in the microwave for 15 seconds to produce starch glue. 
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Etape 5Place the drawing upside down on a board.
Using the back of a spoon, soak the back of the design with starch glue. 
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Etape 6Carefully detach the design from the board.
Place it on the wall, then remove any bubbles by smoothing gently from center to edge with a cloth. 
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