Copypasta from his B&C Thread.
As promised, this is sort of a tutorial of how i paint white. Now, I must stress that this is barely my way of doing so, and that there may be some steps that could be argued to be done without. Also bare in mind that I’m aiming for a very worn and dirty look for my army, and this isn’t intended to look all clean and fresh out of the techmarines paintbooth. However, I think there is some basic knowledge about using white as a colour that must be addressed first.
Basically, when painting in general, the bottle with skull white should be the least used colour of all your bottles. This goes for painting white as well. The reason could be quickly explained that white colour produced sort of kills any depth in whatever you paint if you use white alone to brighten your colours. Referring to the Natural Colour System (NCS), one wouldn’t even consider white as a colour on its own, there they rather talk of all other colours in terms of whiteness and blackness. Meaning, any colour could be almost pure white or black within its own range and that there is no real white or black... just very bright or dark versions of other colours.
Anyway, it is difficult to completely do without white, certainly when painting something that’s meant to appear as white. In fact, in spite of me arguing white in general is a no-no, I do use pure skull white for my highlights. The trick, and this is really important to bear in mind, is to not use white at all when brightening your other colours. Like for instance with my Desert Eagles, the green and orange is brightened without any white. Instead I use other colours, like small amounts of yellow or choose to darken/shading the chosen colour instead. This is purely to keep good contrast and depth between my colours as the overall goal should be to have nice, sparkling and rich colours that are not flat and dull.
The colours I’ve used are Skull white, Elf grey (can be acquired trough coat d’arms), Codex grey, Earth (Valejo), Desert yellow, Hawk turquoise, Orc flesh wash, Brown wash. Also, I always mix my colours with various amounts of water.
I prime my minis with a white spray can and then start off with blacklining my minis using a mix between orc flesh- and brown wash. Mix them up so you get an almost oily look, it should become quite dark, almost black. I then apply it to the recessed parts as seen in the first picture.
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Working with my latest mini I’ve experimented with also applying a wash of very watered down desert yellow to go over the blacklining (or rather, I applied it all over the backpack) as the contrast between light and dark was rather to strong. I do think this does work in my favour, bringing down the contrast slightly as seen in the second picture. It may not be easy to tell the difference from my photos, especially with this one being so damn blurry and out of focus, but you should be able to tell
irl.
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What I do next is to apply the basecoat really. I’m afraid I can’t really give out any definite mix ratios or recipes for my colours, as I mix them up more by gut as I go along. But for the most part I use elf grey as my main colour and then alter it with codex grey, earth, hawk turquoise or really whatever seems appropriate. I do however try to restrain myself from mixing more than 3 colours at any time as it will a) increase the difficulty of mixing up a similar colour a couple of days later and b ) because you then risk to end up with a dull colour with lots of impurities in it.
The goal here is to shade my white so that I can apply highlights later on. As the vents and such will be painted with metallics later, I also basecoated them with black.
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I then start to highlight the edges, old school way, with pure elf grey all the way up to pure skull white.
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The next and final step is to add minor battle damage. If you, like me, from time to time get some small lumps of dirt in your paint or whatever causing nasty bumps, adding damage in those spots is an excellent way to cover them up.
Simply put a black (I mix in some red gore with the black for some depth, pure black run the risk of punching a hole in your paintjob) spot or thin line. Then paint a thin white line underneath the black and finish it off by adding some earth above the black. Easy but rather effective.
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And that’s pretty much it. I hope this is of some help, at least to understand the way I paint my minis.
Cheers!
Edit:
Source Post:
http://www.bolterandchainsword.com/topic/109012-desert-eagles-wip/?p=1476446