Now clean the box inside out and apply pili mitti or brown mitti to the whole box with a rag cloth. After it has dried, finish it with No 300 sand paper. Make a polish solution. Get the required color by mixing brown color or Kajal. If you want to retain original wood colour, use two or three coats of varnish. Apply the polish evenly and take care to make uneven strokes. Apply polish by a soft rags cloth.