My personal formula for painting Word Bearers Chaos Space Marines

Traitors Red: Armour and Cultist Clothes

1. Prime the sinister lad with Chaos Black or any black primer of your choice.
2. Basecoat the miniature with Gal Vorbak Red (I use an airbrush).
3. Shade the miniature with Nuln Oil , if you have also basecoated the Grey Black or Gun Metal areas shade those as well.
4. Drybrush/Layer highlight the armour's panels and hard edges with Word Bearers Red , focusing the drybrush on the high points.
5. Finally, edge highlight the model with Wazdakka Red .

Ruined Cloth and Fabric

1. Basecoat any cloth or fabric areas on the miniature with Mechanicus Standard Grey .
2. Shade the areas with Nuln Oil .
3. Highlight the model with Skavenblight Dinge
4. And edge highlight with Stormvermin Fur .

Armour trim and Metalics

1. Basecoat with Iron Warriors .
2. Shade with Nuln Oil .
3. (OPTIONAL) Highlight with Ironbreaker .
4. Edge highlight with Stormhost Silver .

Bones, Parchment & Wax

1. Basecoat the areas with Rakarth Flesh
2. Shade with Agrax Earthshade
3. highlight with Flayed One Flesh
4. Edge highlight with Pallid Wych Flesh

Brass Accents

1. Basecoat with Warplock Bronze
2. Shade with Agrax Earthshade
3. Highlight with Brass Scorpion
4. Edge highlight with Runelord Brass

Pipes, Undersuits, Leather and Gun casings

1. Basecoat the desired areas with Abaddon Black .
2. Shade with Nuln Oil
3. Highlight with Eshin Grey .
4. Edge highlight with Dawnstone .

Optionally, you can highlight with Skavenblight Dinge and Stormvermin Fur for a more grimy look.

Leather Pouches and Wood

1. Basecoat with Dryad Bark .
2. Shade with Nuln Oil .
3. Highlight with Gorthor Brown .
4. Edge highlight with Baneblade Brown .

Eyes, Lenses and Plasma

1. Base coat the area with Waaagh! Flesh .
2. Shade the area with Nuln Oil .

For Eyes: Paint a small oval where the pupil will be with Warpstone Glow . Paint a smaller oval in the middle of this with Moot Green to make the iris. Finally paint a small slit with Abaddon Black to make the pupil.

For Eye Lenses: Paint majority of the raised area with Warpstone Glow . Add a dot of Moot Green to the inner side of the lense and finish with a dot of White Scar on the outer side.

1. For Plasma: Drybrush the area and edges with Warpstone Glow and Moot Green .

Faces & Flesh

1. There is a wide range of fleshy 'bits' on display in this army and so thus there are a few ways of tacklings them!

1: 'Normal Skin Tones'

1. Give the chap a base coat of either Rakarth Flesh , Bugman's Glow or Dryad Bark
2. Wash with Reikland Fleshshade
3. Highlight with Flayed One Flesh , Cadian Fleshtone or Gorthor Brown
4. Edge Highlight with Pallid Wych Flesh , Kislev Flesh or Baneblade Brown

2: Bruised Flesh

1. Basecoat with Bugman's Glow
2. Wash first with Carroburg Crimson followed by Druchii Violet
3. Highlight with Kislev Flesh

3: Tongues, Guts & Gore

1. Basecoat with Screamer Pink
2. Wash with Druchii Violet
3. Highlight with Pink Horror
4. Edge Highlight with Kislev Flesh

Alternatively you can shade with Drakenhof Nightshade for units like possessed to make the more organic components on them blend into their armour better