Icon Colouring Tutorial

From this To this
1) Take your original image and crop, sharpen and smooth as required.
2) Create a new layer and fill it with #1D0C2E and set it to exclusion, opacity 100.
3) Paste this gradient by BTVS_Res (on LJ) into a new layer and set to multiply, opacity 20.
4) Paste another gradient by BTVS_Res (on LJ) into a new layer and set to multiply, opacity 50.
5) Paste this gradient into a new layer and set to soft light, opacity 55.
6) Paste yet another gradient into a new layer and set to soft light, opacity 57.
7) Paste this gradient into a new layer and set to colour burn, opacity 24.
8) The icon is currently far too dark so duplicate your base and leave it where it is (do not bring to the top). Set it to screen, opacity 80.
9) Duplicate your base again and this time drag it to the top. Set it to screen, opacity 30.
10) Duplicate your base and again drag it to the top. This time set it to soft light, opacity 40.
11) Paste this gradient into a new layer and set to screen, opacity 100.
12) Duplicate your base and drag it to the top, desaturate it and set it to soft light, opacity 100.
13) Paste this red blotch onto a new layer and set it to lighten, opacity 100. (Or using a large soft brush, with the colour something like #931620, paint on a new layer and set it to lighten, opacity 100.) Drag this layer down the layers so that it's under the blue-yellow gradient.
14) Select a pale colour from the icon (I used #F1F0EB) and add a small text brush, and some text in Freestyle Script. Add an outer glow in a dark colour from the icon (I used #190E19) and set it to darken, opacity 75, spread 0, size 4. (I also added a border in the same colour.)
15) I sometimes like to paste a merged copy of the icon into a new layer on top of all the other layers and go Adjustments > Auto Contrast just to see what it looks like, and then play with the opacity until I'm happy.
Depending on your base the opacities and saturations of the screen and soft light duplicates may need changing. Also with some bases I don't like to use stage 6.
Another example of these layers, with the addition of this light texture and this gradient, is: