See the below caption and further link to an article featuring commentary from Dr. Sandra Belmont on the critical mistakes you do not want to make in wearing your face mask correctly.
“Dr. Sandra Belmont, Clinical Associate Professor of Ophthalmology at New York University School of Medicine states that “all medical students are instructed on how to properly wear a procedure or medical face mask but nowadays everyone needs to know how to use them. There is a top part and a bottom part to the mask. The top has a wire that runs along its length. Putting the mask on and simply letting it sit on top of one’s eyeglasses, even with the mask right side up will cause the lenses to fog up. Glasses must be taken off first, then as one loops the elastics over the ears, press down on the wire to bend and adapt it so that it will fit tightly over the bridge of the nose and all along the face. This will prevent air from leaking through and allow the mask to fit under the eyeglasses so they won’t fog up.”