Undercoat your model and decide which pieces you want to be yellow. Basecoat those areas with Iyanden Darksun.

For the first highlight, use Golden Yellow.

Next, highlight the the yellow areas again with Sunburst Yellow.

For the final highlight, use a 1:1 mix of Sunburst Yellow and Skull White.

Lastly, paint any Bad Moonz Symbols with Chaos Black over the yellow areas.