1. Open the file drawer on your work surface.
  2. Place the glass nail file on top of the nail file you will be using.
  3. Close the drawer and open it again to place the new glass nail file on top of the old one.
  4. Close and open the drawer again to place both files on your work surface.
  5. Place your nails in the middle of the files, making sure that each one is facing inwards so that they can be easily cleaned and polished off with a cloth or a piece of paper towel.