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Learn here
1. First of all crop and sharpen your base etc.
2. Now duplicate your base once and set it to soft light.
3. Time for a new curves layer (Layers >> New adjustment layer >> Curves). Leave the RGB and Red as they are. Change the Greena nd blue to:
Green: Input - 0, Output - 8
Blue: Input - 0, Output - 21
4. Merge all layers, and you're done! :)