Keira icon tutorial!
Today we'll go from ...
this:
to 
In just a few easy steps!
Program Adobe Photoshop CS
Difficulty Easy
Translatable No (involves selective coloring)
1. Duplicate your image and set it to screen. Make the opacity whatever looks good.. I set mine to 56%
2. Make a new layer and fill it with #FFFC00. Set it at Soft Light with 70% opacity.
3. Make a new selective color layer..
Reds
Cyan: -100
Magenta: 0
Yellow: 100
Black: 100
Yellows
Cyan: -7
Magenta: 0
Yellow: -25
Black: 0
Magentas
Cyan: -100
Magenta: -55
Yellow: -11
Black: 0
Neutrals
Cyan: 67
Magenta: -16
Yellow: -50
Black: +30
4. You're done! I sharpened mine and cropped it to 100x100px, but do whatever you'd like. Some images may look better with more cyan and less yellows. Just fool around with the settings.
Other examples...

this:
In just a few easy steps!
Program Adobe Photoshop CS
Difficulty Easy
Translatable No (involves selective coloring)
1. Duplicate your image and set it to screen. Make the opacity whatever looks good.. I set mine to 56%
2. Make a new layer and fill it with #FFFC00. Set it at Soft Light with 70% opacity.
3. Make a new selective color layer..
Reds
Cyan: -100
Magenta: 0
Yellow: 100
Black: 100
Yellows
Cyan: -7
Magenta: 0
Yellow: -25
Black: 0
Magentas
Cyan: -100
Magenta: -55
Yellow: -11
Black: 0
Neutrals
Cyan: 67
Magenta: -16
Yellow: -50
Black: +30
4. You're done! I sharpened mine and cropped it to 100x100px, but do whatever you'd like. Some images may look better with more cyan and less yellows. Just fool around with the settings.
Other examples...
