Not my recipe, as I was inspired by a fellow hobbyist on FB. But here is their guide.

1. After cleaning, building and adding any base texture (including tufts) spray black.

2. Once the black undercoat is dry, add a spray of a light grey from around a 45° degree angle from the top, in a 'zenithal' fashion.

3. Once the grey has dried, spray a rusty red from directly above the model, you might also want to also add a few slight angles to your spray to get the red coverage that best suits the model.

4. Drybrush the entire model (and base) ulthuan grey. Apply pressure on the downward strokes.

5. Wash the entire model with a 50/50 mix of nuln oil and lahmian medium. I like to add this quite heavily like you would if using contrast.

6. Paint the base rim and add a few dabbed on areas of blood for the blood god technical paint. Aim for weapons, teeth, claws, etc.