Made with Adobe Photoshop CS3. Not translatable.
Level: Hard. Uses selective coloring.
Remember, as always, that tutorials are to serve as a guide. Your settings may need to change depending on your cap.
1. Crop image to 100x100 px.
2. Duplicate base and set to screen 100.
3. Layer > new adjustment layer > hue/saturation.
REDS
Hue: +3
Saturation: +30
YELLOWS
Saturation: +20
CYANS
Saturation: +20
BLUES
Saturation: +40
4. Layer > new adjustment layer > selective color.
REDS
Cyan: -60
Magenta: -20
Yellow: +15
YELLOWS
Cyan: -100
Magenta: +41
Yellow: -52
CYANS
Cyan: +40
Magenta: -10
Yellow: +100
Black: -30
NEUTRALS
Cyan: +10
Magenta: +10
Yellow: +10
5. Layer > new fill layer > #bee1e5. Set to soft light 100.
6. Layer > new fill layer > #d4ecf8. Set to color burn 100.
7. Layer > new fill layer > #02051a. Set to exclusion 100.
8. Layer > new adjustment layer > brightness/contrast.
Brightness: +10
Contrast: +12
9. Duplicate base and drag it to top. Set to soft light 50.
And you're done! Let me know what you think.