These images show the comparison between the un-polished and polished surface of the face mask. to polish the bronze I use differing grades of wet and dry paper finishing with ordinary cartridge paper, with a final buff with the buffing wheel.
This is the cold patination chemical I have used to patinate the bronze. This patina, as it suggests, is applied to cold bronze.
This is the surface of the bronze 15 mins after the patina was applied. I went on to apply 3 more coats building up the green around the circumference of the oval.