By pinching the layer just below the nostrils and pulling it out a touch allows the nose to spring back into shape thus relieving a certain amount of pressure.

As tannoys rightly stated, it does depend upon the make and style of hose. The most comfortable hose I used for head coverage was wolford 'logic' ... since the knit pattern stretches in all directions and so can be pinched and pulled around the face to minimize facial distortion.
Having said that, a heavily made up face distorted by hose can look outrageously sexy too ... especially when the lipstick has smudged a bit!

I too, on countless occasions, have pulled pantyhose over my head until the reinforced toe area has spread over the crown. It does look complete and feels erotically tight.