Here are the directions:
Take one ear plug, divide it into four equal parts. Each ear plug will make two sets of nasal pillow sealers. (The kids silicone ear plugs are about half the size of the adult ear plugs) and cut into 1/4's - (so this would be 1/8th of an adult sized plug).
Take two of the divided ear plugs and roll each into a round ball.
Take the first round ball and squish it flat between the fingers - and continue to do so until it is about the same diameter as the nasal pillow port - the full diameter, not just the opening. (Probably about a half an inch across).
Take the top of a Bic pen
Now stretch the pancake until the hole is large enough to fit over the port opening of the nasal pillow, pushing gently down around the pillow to ensure placement. Check the opening of the port to make sure the silicone is below the port. Then pushed the down and reform it until all the silicone is wrapped around the edge (see picture).

(Barrel Cozy by Karen at Pad A Cheek http://padacheek.com/

Repeat for the other port.
This took probably seven or eight minutes total. I did try making two little snakes to just wrap around the edge, but the 'snakes' kept falling off and wouldn't stay put.
No leaks. I had a very restless night last night. The seal is a very good one - the silicone is quite sticky. My nasal pillows did not collapse last night, nor were they soft this morning.
**Note** There are silicone ear plugs, soft silicone ear plugs and ultra soft silicone ear plugs. Stay away from the soft and ultra soft silicone ear plugs. There are no ingredients on the label, but with the results of the first test, the soft and the ultra soft may damage the silicone of the nasal pillow.