Lighting-shadows on a face

[Ctoonprty1]

Hi all, this is my first post here!

Is there any other way other than painting manually, to apply the lighting/shadows from face A to face B? Doesn't need to be perfect/exact match. Thank you in advance!

 

[dannac]

Hi all, this is my first post here!

Is there any other way other than painting manually, to apply the lighting/shadows from face A to face B? Doesn't need to be perfect/exact match. Thank you in advance!

Selected B face to own layer
Made gradient using colors from A
Applied to selecton with blend mode softlight ( clipped )
Added levels adjustment layer set to multiply and adjust to your liking ( clipped )
Made group and masked eyes and mouth