Step 1: Zandri Dust
Lay on the basecoat nice and thick.
Step 2: Ushabti Bone
Working with layer paints is interesting. Not thick like the base paints, you can get some good blends with little effort. This was painted in raised areas rather heavy-handed, just staying out of creases and the like.
Step 3: Screaming Skull
Screaming Skull was applied in similar fashion to the step above, but less of it, and not covering as much area. Raised areas, and large flat(ish) surfaces like the forehead of that giant skull, but staying even further away from creases in order to let some of the Ushabti Bone layer show through.
Step 4: Seraphim Sepia
Shades are my best friend. It's a shame there's only 4 glazes, otherwise I'd probably make a 6-step, but we're going to use the Sepia as both a shade and a glaze. It should smooth out the transitions between the two layer paints as well as give a nice dark shade.
Step 5: Praxeti White
This was very lightly dry-brushed over edges and the like to highlight. Don't get too heavy handed with this as there is no glaze step afterwards to smooth it out.