With clean hands, make sure:

1. The coloured surface should be faced out and the whiter side inwards.
   
   
2. Press the thin wire along the upper side of the mask against your nose bridge.
   
   
3. The rubber bands should be wound around your ears, and the mask should cover part of the chin.
   

Some more advice on the use of masks :

1. Do not share your mask.
   
2. Keep the mask in a plastic or paper bag when you are not using it.
   
3. Change to a new mask when it is soiled or damaged.
   
4. Dispose used masks by putting them in plastic or paper bags, and then disposing them in rubbish bins with lids.
   
5. Wash your hands afterwards.