First, make sure that your bottle has been chilled and all moisture on the outside of the bottle wiped away. Then you removed the silver foil around the cork of the bottle. It is easiest to slit the foil with a knife and then peel away.
Once the foil is removed, it is time to open the bottle. First point the bottle away from yourself and any guests. Even though the cork should not pop and go flying across the room it is still important that the bottle is pointed away from everyone. Hold the cork and loosen the cage with your hand. You can either remove the cage or just loosen it. Remember to keep a thumb on the cork for safety purposes.
Now tilt the bottle and cover the cork with a napkin. Hold the napkin and cork in place with one hand and this is the important part, now slowly twist the bottle with your other hand. That’s right you twist the bottle not the cork. The cork should make a small popping or whuff noise or you’ll hear nothing at all and off will come the cork.
Now all you need to do is tilt your glass slightly and fill with champagne.