Stained Glass Windows Materials Papier Mache Geo Shapes Acetate Sheets Heavyweight A4 Cover Paper Black A4 Handmade Collage Shapes Yoken Markers Bullet Black Yoken Markers Bullet Assorted Supertac Glue Scratch Rainbow Lite How to make a Stained Glass Window Step 1. Cut and glue various Handmade Collage Shapes onto a Papier Mache Geo Shape. Step 2. Trim off the overhanging paper from the sides of the frame. Step 3. Use narrow strips of black Cover Paper to separate the collaged shapes and glue in place. Step 4. Trace the inside shape of the Papier Mache Geo Shape onto a sheet of Acetate. Cut out the shape leaving a small border around the outside to secure it to the back of the frame. Step 5. Work within this shape to create a design for the stained glass window. Add colour with the Yoken Markers. Step 6. Glue the Acetate shape to the back of the frame so that it is visible through the window. Alternatively: Replace the Acetate with Scratch Rainbow Lite to create a design for the stained glass window.