From video (Not mine)

1. Basecoat in Grey Seer
2. Block out Black areas with Shyish Purple (Not too heavy) - Avoid Red areas
3. Apply Black Templar to all purple areas
4. Paint shoulder pads with Blood Angels Red - use deliberate strokes, dont worry about getting it on gold areas
5. Apply Retributor Armour to gold trim areas
6. Apply Retributor Armour to gems as well
7. Apply light shade of Fyreslayer Flesh to all gold areas including gems
8. Highlight edges with Liberator Gold
9. Drybrush (faintly) detailed areas with Liberator Gold
10. Spot Highlight edges with 2:1 Retributor Armour and Stormhost Silver