One of the smaller (and cuter) models from the 'Brutally Devious Shadow Mania' team. I'll paint anything even vaguely Cthulhu looking.

Purple Skin

1. Basecoat with 3:1 Warpfiend Grey and Genestealer Purple .
2. Shade recesses using Druchii Violet . Rather than doing an all over wash, use a thin brush and run it into recesses, or shade via glazing.
3. Apply general highlights with Warpfiend Grey . This is very similar to the basecoat, so be quite generous.
4. Apply fine highlights with Slaanesh Grey .
5. Mix your Slaanesh Grey 1:1 with White . use this mix to selectively highlight corners and curves.
6. Finish with specular White highlights, where appropriate.

Fleshy Tentacles

1. Basecoat with Screamer Pink .
2. Wash the tentacle with Druchii Violet . Don't let it pool too much.
3. With a 1:1 mix of Screamer Pink and Pink Horror Horror cover most of the flesh with a thick glaze. Pulling paint towards the centre always. Paint everything just outside of recesses where the dried shade has dried.
4. Paint a smaller area with pure Pink Horror . Use the same technique as above to ensure a smooth transition. This time go over around two thirds of the area, painting higher to simulate where light would hit and adding the illusion of depth below.
5. With a 1:1 mix of Pink Horror and Kislev Flesh flesh paint an even smaller area, pulling even closer to the centre and higher.
6. With pure Kislev Flesh paint a very small area. For some tentacles I add this highlight as multiple small lines to add texture.
7. Optionally, add dot highlights of Flayed One Flesh to the points of tentacles and the centre of the previous steps highlights.

Yellow Eyes

1. Basecoat with Jokaero Orange .
2. Highlight with Flash Gitz Yellow .
3. Finish with a dot of Ice Yellow .

Black Cloth/Leather

1. Basecoat with Black .
2. Apply chunky highlights and glazes with Stegadon Scale Green .
3. Now highlight again, with Thunderhawk Blue .
4. Selectively highlight with Fenrisian Grey .
5. Finish with very small/specular highlights of Blue Horror . In select places, a specular highlight of White works well too, but don't do it all over.

White Trim

1. Basecoat with a 1:1 mix of Celestra Grey and White .
2. If needed, shade with some thin Administratum Grey .
3. Enhance the shading with Dawnstone in very select places.
4. Highlight with White .