In this example we have tried to close lips by the zip, It has easy technique to learn easily so follow now.
Take a picture: Capture any lips picture to modify as here.
Take a zip image.
Merge: Make copy (Ctr +C) of your zip and past (Ctr + V) on the lips picture.
Adjustment: Select you zip layer and press Ctr +
T, now right click and choose "Warp" option to modify the zip shape as
You will have this picture.