Made in PS CS2
Open your image, crop, do whatever you usually do when making icons. I chose this image of Rose McGowan because a) I liked it b) I couldn't find a PSD that I liked with that image, so c) I decided to make my own.
What I did to my image was crop, and made the blacks a little darker by going to Adjustments > Selective Color > Blacks > Black: 100
Create a new Color Fill Layer (Layer > New Fill Layer > Solid Color) using this color (0b042b). Set this layer to Exclusion > 100%
Create a new Selective Color Layer (Layer > New Adjustment Layer > Selective Coloring) with the following settings
You can stop here if you want.
Create another Selective Coloring Layer with the following settings.
And she's done.
Remember that not all images will work with this tutorial. Also, I would love to see the results if anyone tries this tutorial out!