1. Start with a basecoat of bleached bone or similar. It helps a lot when it comes to gold colours.
2. Mix Shining Gold with Mithril Silver (2/1 aproximately as silver is a "stronger" colour than gold). Apply 1 or 2 layers as needed to achieve full coverage.
3. First wash with Devlan Mud, in order to give some depth to the gold.
4. Highlight with the gold mix. Extreme highlight with Chainmail. At this point you can add here and there dots of vallejo's metallic medium as an "extremer" highlight.
5. Finally, wash with a mixture of Devlan Mud and Thraka Green (aproximately 1/1).
The final result should look something like this:
The Galadhrim armour is a little more complicated.
For the helmet, chest, upper legs and arms parts use the above recipe.
For the scalemail part replace the wash tones used in the recipe with Ogryn Flesh.
Finally, the waist part is made of a "redish" leather armour.