Basecoat the armour with a 3:1 mix of Vallejo Metal Color Gold and Copper . If you are using Citadel paints, an equal mix of Retributor Armour and Stormhost Silver is about right.
Wash the armour with Gore-grunta Fur , thinned 1:3 with Contrast Medium .
Thin some Cygor Brown and shade recesses. I just worked it on my wet pallete and let the water do the hard work.
Edge highlight with Gold and Chrome wixed 1:1.
Add specular highlights of Chrome .
Brown Clothing
Basecoat with Steel Legion Drab .
Wash with Agrax Earthshade .
Highlights with Steel Legion Drab and Karak Stone , roughly 50/50.
Selective highlights with Karak Stone and Screaming Skull , roughly :50/50.
Specular highlights with Screaming Skull , where needed.
White Cloak
Basecoat with Ulthuan Grey .
Add soft shading to the recesses with an equal parts mix of Dawnstone , Baneblade Brown and Ulthuan Grey . Keep it thinned to a gaze consistency and brush into the deepest parts.
Glaze Stormvermin Fur into the deepest recesses.
If you want to add muddy texture to the bottom, stipple a very thin mix of Dawnstone and Baneblade Brown e towards the bottom.
Finish off the cloak by adding highlights of a pure white like Dead White or White Scar to edges.