from this
to this
1. Resize your picture and crop it.
2. Create a new channel mixer layer:
red: +124 +12 +14
green: 0 +122 +16
blue: -6 +18 +132
3. Create a new selective color layer:
reds: -52 +29 +34
yellows: 0 -17 +15 -20
neutrals: -7 -2 +11 0
4. New color balance layer:
Midtones: -25 +10 -15
Shadows: +5 +13 +19
Highlights: -0 +7 +3
5. Create a new selective color layer:
red: -21 +15 +12 0
yellows: -15 0 +8 0
cyans: +47 0 0 0
neutrals: +18 +7 -5 +3
6. Create new Huge/saturation layer and set the master saturation to +12.
7. Create a new selective color layer:
red: -10 +1 -2 +4
neutrals: +46 -10 -13 0
8.Create a new channel mixer layer and change the blue settings:
blue: -2 +4 +118
9. Crete a new color balance layer:
Midtones: -30 -9 +12
Shadows: -6 +14 +17
Highlights: -52 +7 +6
10.(optional)If your icon looks too saturated add this step. Create a new layer, fill it with #653204 and set it to exclusion 28% of opacity. Now create a new layer, fill it with #D2D2D2 and set it to color burn 43%.
.psd more examples
more tutorials
here