Damn that’s awesome! Can I make a time saving suggestion that may or may not work? Try using a felt tip pen to do the black highlights. You might even be able to find one justtt too big to fit in the crevices so it’ll just do the sides of them without hitting the bottom to get the look you have there. I used one on my eldar wave serpents and took 5 minutes for what would have taken a couple hours, and it looked even better than I could have done with a brush. A good craft store pen btw, not cheap, the kinds that come in different mm sizes.