This is how I painted the power armour of this Space Marine Terminator of the Salamanders chapter. I was "jazzing" a fair amount when coming up with this, so I dont have accurate photos for some steps.I will update these photos next time I paint a Salamander.

Green Power Armour

1. Basecoat the armour with Waaagh! Flesh . I found this colour a little dull, so I mixed 1:1 with Vallejo Game Ink Green.
2. Apply a zenithal highlight with Warpstone Glow . If you don't have an airbrush, you can glaze in where the light would hit or skip this step altogether.
3. Pin wash with a mix of 2 parts Warp Lightning , 1 part Black Templar and 3 parts Contrast Medium . Carefully paint this into all recesses and shadowed areas on the armour.
4. Add a chunky edge highlight of Warpstone Glow to all gray parts of the armour.
5. Highlight everything again, this time with a fine line of Warpstone Glow and Moot Green mixed 1:1.
6. Selectively highlight extreme ages and points where highlights meet with small amount of pure Moot Green .
7. Add dot highlights of Gauss Blaster Green to the centre of the previous steps highlights and to points.
8. Finally, glaze some Iyanden Yellow over the dot highlights and most of the Moot Green selective highlight.

Gold Trim

1. Basecoat gold parts in Liberator Gold . This may take a few coats.
2. Use Guilliman Flesh to coat all of the gold areas. Wick excess away where it pools, treating it like a wash.
3. Add small highlights to prominent areas and edges. Use a 1:1 mix of Stormhost Silver and Liberator Gold .
4. On points, corners and the most extreme point of prominent areas, add a dot highlight of Stormhost Silver .