Christmas Tree Mosaic Materials Washi Tape Coloured Cardboard Street Paint Markers Gold Zart Multi Markers Gold & Silver Blacklead Pencil Step 1. Draw an outline of a tree shape onto a piece of card with a Blacklead Pencil. Step 2. Tear small strips of Washi Tape and stick down to fill-in the tree outline. Leave gaps between each piece and use different patterned tapes to create a mosaic effect. Step 3. Once shape is filled, add final embellishments such as stars or a festive message using a gold Street Paint Marker or a Zart Multi Marker.