Guide from: https://youtu.be/4R8rrabPLxY

Armor

For the armor we will prime the entire model black (1).
Our first base-coat we will hit all major surfaces while leaving the crevices black (2).
The fight highlight we will hit the tops of the major parts of armor (helm, backpack, shoulder plates, tips of feet) (3).
The second highlight we will select only the very tops of the armor (use sparingly) (4).

1. Prime: Corvus Black
2. Base: Caliban Green
3. OSL Highlight 1: Olive Green
4. OSL Highlight 2: Eau De Nil Duck Egg Green

Details

1. Metal Bits: Leadbelcher
2. Weapons: Leadbelcher > Blood Angels Red
3. Wings: Wraithbone
4. Shoulder Pad / Eyes: Mephiston Red

Wash

1. Smoke

We water down the Smoke with mineral spirits and wash the entire model. Afterwards we take a q-tip dipped in mineral spirits and dab at the highlighted parts to bring forth the color more.