Basecoat with a 1:1 mix of Vallejo Metal Color Duraluminum and Steel . If you have Dark Aluminum , this is pretty close. The equivalent Citadel paint would probably be close to Leadbelcher .
Mix equal amounts of Duraluminum , Steel and Liquitex Prussian Blue ink, and do a general shade of the recesses. This mix is also good for areas you wish to glaze shadows. If you wanted to use a Contrast Paint, Talassar Blue would be a decent choice.
With some Black Templar , do a more precise recess shade, aiming for the very deepest parts only.
Now the shading is done, now is a good time to get the under-suit painted.
With Vallejo Metal Color Silver , add chunky highlights in exposed and upward facing areas. Glaze where necessary to keep things smooth.
In areas where you want a little more punch, add selective/specular highlights of Vallejo Metal Color Chrome .
Basecoat with Abaddon Black .
Pick out as much of the raised ribbing as you can do comfortably, with Eshin Grey .
Pick out around two thirds of the previous highlight, using Dawnstone this time.
Now finnish off the ribbing with a small highlight of Administratum Grey .
Blue Eye Lenses
Paint the eyes with Kantor Blue .
Now paint the three quarters of the eye closest to the nose with Temple Guard Blue .
Paint around one-third of the previous highlight with Baharroth Blue blue, close to the nose.
Add a very small highlight of Blue Horror , next to the nose.
Finally, place a small dot of a pure white (like White Scar ) in the corner that is still Kantor Blue .
Basecoat with Thousand Sons Blue .
Paint/glaze half of each side of the blade with Temple Guard Blue .
Glaze Gauss Blaster Green toward the tip, furthest from the Thousand Sons Blue .
Glaze Incubi Darkness on the opposing side, running in the opposite direction.
Enhance this shadow by glazing Abaddon Black towards the tip.
Edge highlight carefully with Gauss Blaster Green . I like to add a few scratches to the blade here too.
Selectively edge highlight tips and corners with a pure white. If you added scratches to the blade in the last step, add smaller lines or specular highlights to them.
Basecoat with Vallejo Metal Color Gold .and Copper , mixed 2:1.
Wash with everything but the test with Gore-grunta Fur , thinned 1:4 with Contrast Medium .
Thin Cygor Brown 1:4 with Contrast and wash the recessed writing, darkening around it nicely. I also use this mix for selective shading of recesses on the rest of the gold, making it look more interesting.
Re-establish the Gold .and Copper in areas you would like to bring the shine back on.
Now pop a drop of Vallejo Metal Color Chrome into whatever paint is left and selectively highlight edges.
Finally, add specular highlights of Chrome to points.
Basecoat White areas with Pallid Wych Flesh .
Basecoat red areas with Mephiston Red .
With a 1:1
Basecoat with Mournfang Brown .
Wash with Agrax Earthshade .
Drybrush with XV-88 .
Light drybrush with Ushabti Bone .
Paint rocks with Dawnstone .
Add highlights with Administratum Grey , drybrush if possible.
Add specular highlights with the above paint, after mixing in a little pure white. If you fancy it...