Tutorial: painting Imperial Guard skin

Many blog readers ask to me how do I paint the skin tone, because it seems so soft. I can share my technique painting three Beret Stormtroopers conversions.
I use non-GW colours, but it's not difficult to understand the corresponding GW ones. Colours diluted!
Here the tutorial.

I start with a black wash to cover all the difficult point of miniatures. Note that this is the only wash I use...
Then a layer with a brown that tends to red (can I define it bestial brown?)
The same brown blended with "dwarf flesh" to paint another layer, avoiding deepest recesses (between fingers, mouth...).

Once again black to refine eyes and edges.
Now the highlights. I repeat: diluted colurs!!
First "dwarf flesh" and then "dwarf flesh" blended with "elf flesh".

So the skin tone I use is very easy: a sequence of highlights with diluted colours. If we do a mistake we can correct it with the previous diluted colour.