Creating Wrinkles to Show Aging on Face
Start by opening a image of a face close up.
Select burn tool with the settings shown at the top bar. Apply this tool over the eye areas.
Apply same tool on different areas to create dark skin areas.
Similarly apply on the other side of the face.
From Filter menu select "liquify". Select pucker tool and apply it on lips area.
Now select forward warp tool and apply it on eyes areas.
Select burn tool again and apply it over the upper lip and below the bottom lip.