Article in English: Carefully remove the mask from its package again and unfold it completely. Lay it on your face, making sure to match up the eye, nose, and mouth holes. Spend a few seconds pressing the sheet mask onto your skin so that it sticks and makes as much contact as possible. Check the package for timing directions and follow them strictly. Most sheet masks need to be kept on for 15 or 20 minutes, and no longer. Turn on some music and lay on your back with your eyes closed while you let the mask work its magic.  If you leave the mask on for too long, it may dry out and start pulling moisture back out of your face.  Set a timer if you’re worried you’ll lose track of time. After the correct amount of time has passed, peel the sheet mask off by starting at the chin and pulling up. Then, discard the mask.

Summary in Indonesian:
Kenakan masker. Diamkan masker sekitar 20 menit. Lepaskan masker perlahan-lahan.