Here is my work in progress on one of the furnaces for my list. I'll be doing the same techniques on both.
I began by with white primer, then dusted the bottom with necrotic flesh primer.
This helped set a mild green/yellow tone to the model. Then next step, I began doing the smoke elements by wet blending skull white, stone grey and matte black.
Next I used plague shader to set my initial green shade.
Then I re did the smoke elements and the chain with Claymore Blade, then began working in FW Light Green ink.
Did a little more touch ups then painted the difficult section of the furnace with claymore blade. Then washed it all with caroburg Crimson.
Finally, I let it all dry. Dry rushed ryza rust and finally nihilakh oxide to finalize the rusted look.
Tell me what y'all think!