1)Filter-> Render -> Clouds

2)Filter-> Render -> Difference Clouds si ctrl +f de 2- 3 ori.

3)Apoi intrati in Filter > Sharpen > Unsharp Mask cu urmatoarele setari:
Amount: 475%
Radius: 3
Threshold: 14

4)Apesti CTRL + B si faci uratoarele setari:
Shadows: [+100] [0] [-100]
Midtones: [+100] [0] [-100]
Highlights: [+70] [0] [-15]