My Sisters of Battle paint scheme.

Base Coats

1. Prime using Corax White
2. Base coat the armor with Abaddon Black . Avoid the robes. Also Avoid any areas you want to leave white, such as the emblem on the left pauldron, helmets, and hair.
3. Paint the robes with Akhelian Green .

Detailing

1. Base coat weapons. This is up to personal taste.
2. Paint Fleur-de-lis, inquisitorial rosary, tube clasp at the throat, and any other emblems with Retributor Armour .

Face

1. Base coat with Bugman's Glow .
2. Wash the face with with Reikland Fleshshade .
3. Detail with Cadian Fleshtone .
4. Detail raised areas with Kislev Flesh .

Washes and Additional Contrast Paints

1. Wash Retributor Armour with Reikland Fleshshade .
2. Use Apothecary White for the hair.
3. Use Aethermatic Blue for the eye lenses.

Edge Highlights

1. Highlight edges with Dark Reaper .
2. Go over the same edges with Russ Grey .