Based on linked video, significantly edited to fit my available paints

1. Base spray with Chaos Black

Base layers

1. Use Incubi Darkness as thin base layer for shading all the main armour parts, as well as the front base of the shield and the stone
2. Cover the face with a thin layer of Wraithbone
3. Coat the weapon with Iron Warriors
4. Base all decorative / non basic armour panels with Runelord Brass
5. Add a base layer of Flesh Tearers Red to cover the dragon on the shield, as well as the hair

Highlights, shading, contrast

1. Shade all the decorative bronze ( Runelord Brass ) with Gore-grunta Fur
2. Cover weapon with thin layer of Nuln Oil
3. Re-apply Runelord Brass over the decorative bronze as highlight, avoiding the recesses
4. Highlight the black ( Incubi Darkness ) armour using a very thin layer of Sybarite Green
5. Highlight the edges of the shield base using thinned down Khorne Red and
6. Further highlight those and the ridges on the shield with Gryph-hound Orange as well as the shield emblem and the hair
7. Pick out the sharpest edges and points on all of the shield and hair and lightly dot those with Evil Sunz Scarlet

Final details

1. Highlight the silver with Runefang Steel
2. Finish the model by covering the ruby at the base of the weapon with Ahriman Blue and a tiny dot of Corax White as shine
3. Highlight the facial structure with Corax White and shade whole face with Nuln Oil
4. Drybrush the stone and bats using Dawnstone