The basic soldiers are mostly a color test for me, before I try to tackle the rest of the army, which is going to have major conversion work. I'm probably going to try the onager next. Like the AoS Chaos army, I'm attempting to 'speed' paint this army seeing what I can achieve with as few colors, layers, and time as possible.
The only conversions on these guys is the 'technically' mismatched helmets for their weapons (these just felt more 'atlantis' and '20,000 leagues under the sea' than the hooded robes) and the scales on their cloaks, done with a layer of greenstuff that I think stamped with a wire mesh.
The ruins and buildings around I'm trying to make feel like an 'atlantis' ruin, thus the glyphs and color choices.
I've never really been happy with my OSL. I'm getting better compared to when I started, and one of the biggest lessons I learned was that you can't use just one color. You have to start with the darkest going the farthest, then build up to your lightest color dry brush only near the source. I know that's obvious and easy for most of you, but I honestly never knew that. The colors on this are a little off too, in that the sources are more orange than the reflections, which appear green. This is probably because I'm dry brushing on top of a metallic for the latter areas, and it's not working well. Not sure though.