Inspired by Martin Peterson's interpretation on the back of the Sisters of Battle squad box, I decided to give this scheme a go. I think I was able to replicate it accurately enough.

White Armour

1. Basecoat with a 1:1 mix of Celestra Grey and White Scar .
2. Do a general "thick" recess shade with a 1:1 mix of Celestra Grey and Dark Reaper .
3. Now do a more precise recess ahde with fine lines of pure Dark Reaper .
4. Edge highlight all of the armour with a pure white like White Scar or Dead White . Keep this fairly thin so you can go in and do a second selective highlight on points and corners.

Black Vestments

1. Basecoat with Abaddon Black .
2. Give raised and exposed areas a general highlight with thin Corvus Black . Feel free to keep them scratchy or even stippled, just to add texture.
3. Now add chunky highlights of Eshin Grey within the last stage and along edges. Also add smaller highlights of dots or lines within the last stages glazing, to enhance textures.
4. Now add fine edge highlights of Dawnstone and continue with the smaller highlights, like in the last stage.
5. With Administratum Grey , add very selective highlights to exposed edges, folds and points.
6. Finally, mix some White Scar (or another pure white) into the Administratum Grey and add specular highlights to points and areas where light would hit.

Red Vestment Lining

1. Basecoat with Khorne Red .
2. Mix the Khorne Red 1:1 with Rhinox Hide and glaze shadows into recesses.
3. Add an equal amount of Abaddon Black into the above mix and glaze some more precise shading into deeper recesses.
4. Take some Evil Sunz Scarlet , thin it a little and glaze raised/exposed areas of cloth. I also like to use this paint to add in some chunky edge highlights.
5. Mix the Evil Sunz Scarlet 1:1 with Squig Orange and glaze a smaller area, with thinner edge highligts.
6. Now with pure Squig Orange , repeat the step above, getting even more controlled and applying your very finest edge highlights.
7. With a mix of equal parts Squig Orange and Screaming Skull , selectively highlight corners and exposed edges.
8. Finally mix the Squig Orange 1:2 with Screaming Skull , adding final dot highlights to points and areas that need an extra bit of punch.

Basing

1. Prime with Chaos Black and ensure coverage with thin Abaddon Black .
2. Heavy drybrush with Sylvaneth Bark .
3. Drybrush with Karak Stone .
4. Light drybrush with Screaming Skull .
5. Paint the base rim with Skavenblight Dinge .