from this
to this
1. Choose your picture, resize it and crop it.
2. Create a curves layer:
RGB
point 1: 129 164
point 2: 172 208
red
point 1: 146 158
point 2: 175 205
green
point 1: 117 141
point 2: 138 161
blue
point 1: 115 140
point 2: 146 194
3. New channel mixer layer:
red: +126 +10 0
green: 0 +112 0
blue: -4 -2 +112
4. New selective color layer:
reds: -49 +4 -2 0
yellows: -29 0 -21 0
whites: +79 -68 -45 0
nuetrals: +57 -19 -33 0
5. New levels layer:
RGB input: 0 0,81 255
red input: 0 0,57 255
green input: 0 0,13 255
blue input: 0 1,24 255
6. New channel mixer layer:
red: +114 -24 -10
green: 0 +114 0
blue: -8 0 +112
7.New selective color layer:
reds: -66 +12 +47 0
blues: +97 0 0 0
whites: 0 +61 -90 0
neutrals: +28 +1 -6 0
.psd more examples
more tutorials
here