For this guy I did an experiment to speed up my painting. Instead of mixing each layer of highlight individually, I created batches and bottled them so I can use them again. Furthermore I reduced my highlighting layers to three for the carapace, skin and claws. Normally I do about 7 for the carapace, 5 for the claws and 4 for the skin. Some models get more layers (like my Malanthrope), but to speed things up I wanted to push how few I could do and still get good results.
The carapace isn't as bright as normal, and I may add one more layer back. I may have to use a slightly different technique as well to make the blend better.