This is part 2 of tutorial on turning photograph into cartoon-style
picture. (If you haven't done so, please read the
first part of the tutorial).
On the first part of the tutorial, we have made the outline of the
cartoon photo. Here's what we got so far:

By the end of part 2 of the tutorial, we will have something like
this:

Now begin...
Step 4: Coloring the Skin
Our next step is coloring the skin.
1. Select the 'outline' layer. Press
Ctrl-J to duplicate the layer (or drag and drop it to the 'create
a new layer' button). Rename the new layer to 'white'.
2. Let's make this layer pure white.
Choose menu: Image :: Adjustments :: Brightnness/Contrast...
Move
the 'Brightness' slider all the way to the right (+100) and the 'Contrast'
slider all the way to the left (-100).
Click OK.
Now we have something like this:

3. Drag the 'white' layer below the
'outline' layer.
4. Change the blending mode of 'outline'
layer to 'Multiply'.
5. Press 'd' to set the foreground color
to black and background color to white.
6. On the Layers Palette, select the
'white' layer.
7. Click the 'Create new fill or adjustment
layer'
at the bottom of Layers Palette. On the popup menu, choose 'Solid
Color...'. A 'Color Picker' dialog box will be displayed.
On the 'Color Picker', pick a creamy brown color. This color will
be used for the skin color. (I picked #FAD594 for the skin. You don't
need to be too picky here. We can change the color easily later whenever
we need to).
Click OK
8. Now we have something like this.

9. Choose 'Paint Bucket Tool'
.
Click on the canvas to fill skin's layer mask with black color.
10. Rename our new layer to 'skin'.
And now we have something like this.

11. Create a clipping mask between 'skin'
layer and 'white' layer. Press Ctrl + G while the 'skin' layer is
still selected.
12. On the 'Layers Palette', click on
the 'outline' layer while holding (pressing) the Ctrl button. This
will tell the ants to march around Rihanna. Oops, I mean, this will
put a selection mark around Rihanna.
13. Press 'x' to switch foreground and
background color.
14. Choose 'Paint Bucket'
tool, click inside the selection on the canvas to fill it with white.
15. Press Ctrl + D to deselect the
selection area.
And we're done coloring the skin.

Here's what we got so far:

Go on to the
next part of the tutorial.