How to paint Revenants of Khaine

Lore information - First showed up 20xx in the wonderful supplement uniforms and heraldry of the High elves.
These Nagarythe warriors guard the widowmaker.

Colour scheme sourcing is essentially: The supplement, their regiment in the TOW book, the images from the end times & fan art.
The supplement shows them 1. having the banner from the archer regiment, instead of the two smaller banners 2. Silver armour, with red helmets shoulderpads, gold trim (?) 3. Shield with the widowmaker etc etc etc.
While in the end times imagery their helmets are sometimes shown to be classic silver.
They were supposed to be in the Total War, apparently sound assets and references were found for them in the game files, but no models. This fan made asset is essentially the same as the original artwork but with the spearmen regiment banner(s) instead of the single large banner from the archers. They also have som alternative shield designs.

Shields

Banners
The banner from TOW is made from a Dark elf spearmen kit, and is slightly different to the old artwork

Step 1: Undercoat the model in chaos black

Step 2: Dry brush the metal bits with Leadbelcher (Gunbolt metal), and then a more sparingly drybrush with runefang steel (a mid range metallic, somewhere between gunbolt metal and silver).

Step 3: Paint the helmet, and parts of the torso with retributor gold (A strong gold colour).
I'm going for the more metallic sheen found on the Total war models, so I then use a contrast paint over the parts I want to be red(with medium?) essentially thousand sons 30k style.

Step 4: skin>

Step 5: cloth

Step 6: Wood

Step 7: Gems

Step 8: Shields

Step 9: Banner

Bonus step: Adding more details for the first rank