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[ 1 ] get your base. mine is kristen bell, the love of my life... lol.
[ 2 ] duplicate your base and set to screen, 25%. but depends of your image. anyway xD
[ 3 ] selective colors:
r: -60, -8, 4, 7
y: 16, -2, 8, 3
n: -4, 5, 13, 4
b: 0, 0, 0, 100
[ 4 ] channel mixer, set to pin light 100%:
r: 85, -10, 10, 0
g: -15, 50, 55, 0
b: -50, 75, 60
[ 5 ] hue/saturation: saturation +7
{you can stop here, if you want. but i'm a color balance freak 8D}
[ 6 ] color balance, set to soft light 56%:
m: 9, 1, -6
s: 14, 6, 4
h: -3, -2, 14
and pronto, you're done :D
pleeeeease show me your results!
other examples: