Creating Mustache in face with out mustache using photoshop.

Start by opening an image of a man without mustache.

Press Q to enable quick mask. From filter menu select render>>fibers. Apply settings as shown.

Press Q again to disable quick mask.

Create a new layer and fill the selection with black color.

Create a rectangular selection using rectangular marquee tool. Press Ctrl+Shift+I to invert the selection and press Delete.

Press Ctrl+T. Right Click and select Warp. Adjust the nodes to get the shape as shown.

Double click the layer to open layer style window. Apply settings as shown.

From layer menu select layer style>>create layers. Select and merge both the resulting layers. Click add vector mask button from the bottom of the layer palette.

Select black as foreground color. Using a medium radius brush with feathered settings stroke the hard edges of moustache. These hard edges will be smoothly masked out.