My green Apha Legion 30k. Credit to JuanHidalgoMiniatures for the general workflow. Reverse credit to myself for making it extremely complicated. Work in progress!!!

Prep stage:

1. Prime Black
2. Spray Leadbelcher
3. Wash all over with Nuln Oil
4. Light all-over drybrush Necron Compound
5. Edge drybrush Runefang Steel
6. Create feather highlights/transitons with Runefang Steel
7. Create shadows / dark transitions with Black Templar
8. (Optional) Very quick edge highlight Stormhost Silver

Green Armor

1. Wash each panel with 100% strength mix of Akhelian Green and Contrast Medium 1:1. WARNING: Do not put this in your wet palette and do not allow it to separate. Keep it mixed and shake well. Otherwise you'll get blotches.
2. (Optional) If you do get blotches and ruin a model - before you strip it, try just drybrushing the whole thing again in Necron Compound then doing another thin layer of the Akhelian Green mixture. It might just save it!
3. Tint highlighted areas with Warp Lightning . Note this is VERY strong. Leave shadowy areas blue. Feather with water to create transitions from green-blue.
4. (Optional) If needed, come back in with the Akhelian Green mixture and tint any shadows blue which you think need it. Key areas: Under scales, frontside of backpack (behind head), under armpits, leg areas.

Shading and Highlights

1. Shade pin shadows with Black or Black Templar
2. (Optional) Varnish model. I use one layer of Satin, one thin layer of Matte. But be careful not to go too matte or you'll lose the metal effect.
3. (Optional) Go over darkest shadows and pick out rivets with Army Painter: Dark Tone. It has a different finish to the varnished layers and will make layers stand out. It also pools around rivets and into little armor cracks in a really satisfying way.

Steel Trim and Bronze

1. Base all silver areas in Gunmetal and all bronze areas in Sycorax Bronze . Wash both with Gryph-charger Grey and highlight Stormhost Silver .
2. Base all gold areas Retributor Armour , wash Guilliman Flesh , give it a large highlight of Sycorax Bronze and a pin highlight of Stormhost Silver

The most important step

1. Hit all hard edges with chipping, scratches, and an ultra-tin edge highlight of Stormhost Silver . This final step will really brighten the model up and sell the metal effect! Also don't forget the rivets that we hit with wash earlier.

Basing

1. Spray your favourite brown.
2. Basecoat Steel Legion Drab
3. Wash all over with 1:1 Nuln Oil and Lahmian Medium
4. Drybrush 50/50 Steel Legion Drab and Ulthuan Grey
5. Drybrush edges and rocks with Ulthuan Grey
6. Tufts: Games Workshop Corpsegrass.
7. Paint base trim Black