>>1947068Create a mask from the object. The background can't be altered.
Invert the mask. Now it's the face which can't be changed.
Expand/feather the mask 2 pixels. The edge of the face can be changed.
Apply a little Gaussian blur. That softens the edges.
But the outline may be too light now.
Duplicate the selection onto another layer and set it to 'multiply' Now it's darker.
Merge the layers with each other.
I should have removed the dark line where his hair meets the frame.