Go from
this to
1. Crop to 100x100.
2. Filter > Sharpen >> Unsharp Mask... with these settings:
3. Duplicate the base four times, set the first three layers to screen at 100% and the top, fourth layer to soft light, also at 100%.
4. Color Fill/New Raster Layer fill with #0A072F
set to exclusion at 100%.
4. Color Fill/New Raster Layer fill with #F15991
set to multiply at 30%.
5. Color Fill/New Raster Layer fill with #F6EEB9
set to multiply at 100%.
6. Color Fill/New Raster Layer fill with #22881D
set to overlay at 40%.
7. Duplicate the base, drag to the top, set to soft light at 100%.
8. Duplicate the base again, drag to the top, set to screen at 30%
9. Layer > New Adjustment Layer >> Brightness/Contrast...
10. Layer > New Adjustment Layer >> Selective Color...
For the yellow channel:
For the blue channel:
11. Layer > Merge Visable and you done!
Final layer palette:
More examples:
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