Thanks brother! Im really glad you liked it! The technique is one I learned for painting imperial knights, and I thought I'd apply it to my iron lions. Been doing it ever since! Below you'll find the paints I used for this mini, dakka dakka has a paint equivalence chart to help you out in color matching if you use a different brand.
•Vallejo Game Color Leather Brown Primer (base color)
•Vallejo Game Color Khaki (pouch and skull base color)
•Vallejo Game Color Bone White (pouch and skull highlight)
•Vallejo Game Color Glorious Gold (gold parts)
•Vallejo Model Color Black, Metal Series ( body suit and blade color)
•Vallejo Game Color Chainmail (metallic highlights, bolter)
•Vallejo Game Color Dead White (whites lol)
•Vallejo Game Color Gory Red (red jaw and heraldry)
•Vallejo Game Color Black (heraldry)
•Vallejo Game Color Electric Blue (eyes)
•Vallejo Wash Sepia Wash (I don't recommend these washes. I have a set and this is the third color I use from it. Every time im very disappointed. I'd recommend Citadel Aggrax Earth Shade over this.)
•Vallejo Game Color Leather Brown (primer)
•Vallejo Game Color Dark Flesh Tone (base)
•Vallejo Game Color Leather Brown (drybrush)
•Vallejo Game Color Khaki (drybrush)
•Vallejo Game Color Bone White (drybrush)
•Vallejo Wash Sepia Wash
For the grime, a tutorial:
•after all your painting is done, you need to airbrush your mini with a floor cleaner. I use Pledge Floor Finish, the guy I learned it from used a different cleaner, with same effect. Any similar product should work. The cleaner will also serve like a varnish protective coat.
•once it's all dry, I mix (eyeballed) 50/50 of these 2 paints into my airbrush
They have multiple colors, maybe you want to yet a direct combo.
•spray the whole model ( I included the base on yours because of the planet surface being similar to the armor, on my iron lions i only spray the model before attaching to the base). Make sure you get every spot. As you can see, the model will look almost completely brown
•wait 45 minutes
•Get a paper towel and qtip. Wipe down with the paper towel over all surfaces. Take care to leave some on recesses, and parts that you want extra grimy. Use the qtip for those hard to reach areas. Do not wipe hard. Ive taken off paint before because I wad too rough with it.
•you'll need to touch up some spots. Mainly the eyes, but feel free to go after anything you want brighter