It's an interesting clothing style, kind of similar to Purple. Simple, but striking is usually the way to go.
The angels are a bit sharp, but that's part of the style and it gives it a "crisp" feel, so I like it.
Honest criticism... the colors feel a bit flat. The shading itself is fine, it's more like the selective use of color. The simple dark green and brown leather works for Amaranth, but I felt the colored highlights used in Purple worked a bit better.