Selected the face of the provided source image, copied and pasted.
step 6 of 6
Selected half of the face (right side), copied, flipped, adjusted and merged layers. At this moment, the man seems eye-crossed; so I selected and copied the right eye and flipped - now the both eyes are looking at the same direction. Copied and pasted part of the beard. Merged all layers and used puppet warp to narrow the face lines. Lighting adjusts, shadows, etc, added after.