I'm afraid this will not look really good from the distance.
I love the conversion work and overall feel, but paintjob imo just needs a stronger contrast to make it look good on the battlefield.
I appreciate the paint job needs a lot more work, but could I get some suggestions?
I particularly feel the red is weak and there's an overdose of metal.
Planned improvements:
Highlight the lenses
Redo/clean up the red with more depth.
Further highlight the lava on the base.
Highlight the verdigris
Paint the skulls as bone