looks good so far,maybe make the hair look like its cascading over the shoulder more and a bit less stiff in that area above her left shoulder
Im gonna assume that the graphic treatment of the hair was on purpose. I think this is looking really good so far. the flowers look great. I am a bit worried that the darker side of the face may be getting a bit to dark. Unless you really want it to be totally monochromatic I would suggest throwing either some more blue tones into the cool core shadows, or some warmer shades into the highlights to. This is all based on how it looks without any other color in the composition, so take these suggestions with a grain of salt lol.