– Blue and red cellophane.
Step 1: Print the template with A4 paper, rate is 100% or 90% depending on the size face
Step 2: Cut them individually as the picture. Paste them on the carton and cut to the border.
Step 3: Using glue to fix lenses (Cellophane) on the glass holes.
Step 4: The final is fixed two sides of the rimmed glasses.