I looked at a load of artwork for medieval priests and found one I liked. I took those colour choices and applied it to the (admittedly different) equipment of my Warrior Priest. No regrets.

Dark Green Robes

1. Basecoat with 1:1 Corvus Black and Caliban Green .
2. Shade deep recesses with Abaddon Black .
3. Highlight raised details with 1:3 Corvus Black and Caliban Green .
4. Take some of the above paint and mix it 1:1 with Sons of Horus Green , then add chunky edge highlights.
5. Now apply fine edge highlights with pure Sons of Horus Green .
6. Mix the Sons of Horus Green 1:1 with Ice Yellow and selectively highlgiht.
7. Add some Ivory to the above mix and then selectively highlight corners and curves.

Cream Robes

1. Basecoat with 2:1 Wraithbone and Rakarth Flesh .
2. Add soft shading with thinned Karak Stone .
3. More precisely shade with XV-88 , covering less area.
4. Shade only the deepest parts and harshest folds with Rhinox Hide .
5. Apply chunky highlights with Wraithbone .
6. Mix your Wraithbone with an equal amount of White , then apply fine highlgiths.
7. Finish with selective White highlights.

The highlights for this material are best applied as scratchy lines to give texture. I would also advise applying some as occasional dots in the latter stages.

White Shirt

1. Basecoat with 1:1 Celestra Grey and White .
2. Wash with Apothecary White .
3. Increase the amount of White in your basecoat and apply fine highlights.
4. Finish with a few selective White highlights.

Skin

1. Basecoat with Kislev Flesh .
2. Wash with 2:1 Reikland Fleshshade and Contrast Medium .
3. Selectively highlight with Flayed One Flesh .
4. Finish with a few specular highlights of Pallid Wych Flesh on the knuckles.

Tarnished Gold Helmet

1. Basecoat with Retributor Armour .
2. Wash with an equal parts mix of Agrax Earthshade , Reikland Fleshshade and Contrast Medium .
3. Shade the cross with thin Rhinox Hide .
4. Enhance the shading around the cross with a glaze of Reikland Fleshshade .
5. Mix some Silver RLM01 Metallic into your Retributor Armour and apply chunky highlights.
6. Increase the amount of Silver RLM01 Metallic again, then apply fine highlight.
7. Finish with a few specular highlights of pure Silver RLM01 Metallic .

Dark Brown Leather Tube

1. Basecoat with Rhinox Hide .
2. Take some thinned Mournfang Brown and apply a heavy glaze over the tube. Work in rough lines, always pulling your brush towards the apex of the tube.
3. Now with Skrag Brown , apply a chunky highlight down the most exposed part of the tube, covering less area that the previous stage.
4. Mix 1:1 Skrag Brown and Ushabti Bone and repeat the above, but make it a finer highlight.
5. Selectively highlight with Ushabti Bone .
6. Add a little :white to the Ushabti Bone and add a couple of specular highlights, where needed.

Metal Mace Head

1. Basecoat with Leadbelcher .
2. Wash with Nuln Oil .
3. Glaze some Agrax Earthshade into the deep recesses of the mace head.
4. Mix some Silver RLM01 Metallic into your Leadbelcher , then add some highlights.
5. Finish with a few specular/very small Silver RLM01 Metallic highlights.

Black Mace Shaft

1. Basecoat with Black .
2. Drybrush with Dark Reaper .
3. Drybrush again, but slightly lighter with Thunderhawk Blue .
4. Overbrush an even smaller highlight with Fenrisian Grey .
5. Mix a little White into your Fenrisian Grey and apply very small highlights.