to
1. Duplicate you base & set it to screen.
2. New selective colouring layer, opacity 50%
Reds:
Cyan: +100
Magenta: 0
Yellow: -100
Black: 0
Yellows:
Cyan: -58
Magenta: 0
Yellow: 0
Black: +39
Whites:
Cyan: +63
Magenta: 0
Yellow: -27
Black: +58
Neutrals:
Cyan: -58
Magenta: 0
Yellow: 0
Black: +44
3. Grab
this soft light texture from
innocent_lexys Flip vertical and lighten 50%
4. Grab
this texture also from
innocent_lexys and drag it to where the dark blue parts are. Lighten 70%
5. Duplicate your base and drag it to the top. Set it to lighten 100%.
And your done!