Starting with the colors. Here is the 1st round - The scene is set in the morning with a strong sun coming from behind the viewer. The Withking doesnt reflect much and stands on top of the hill like a black statue, while Eowyn wears some metal plates, that reflect a lot of light. Especially her sword. I use the cape as an eye catcher and for some overlapping.
The 2nd is a mix between them and some color adjustments for more blue in the shadows. I was told that green is the color of Rohan, so I changed the cape and now the yellowish ground and the red make a nice contrast to make her shine.