Seeing that the linework was handled by another artist, I'll keep this about the color and shading, even though I really enjoy the linework that I can see here. The colors are good, but it feels rather flat, some depth could be added with some variety and value in the background, the parts that are farther from us (the viewer) feel like they want to be darker than they are. Also it feels that the colors are just shaded flats, which isn't bad, but I think by using some differing hues you could achieve a more vibrant look to the whole image. That's about all I have on it, other than I think the leaves located in front of her hair, beneath the near arm (her left) stand out a bit too much? At first I mistook them for holes or separations within her hair, so maybe that could be corrected by darkening them up a bit. Hope this helps, I still really enjoy the piece!