The panel is actually too dark; it is blending into your outline. Try using the second darkest color in your palette to fill it in, or something at least a shade lighter than what you have here. Also, I think it should fall more in the open space between her legs, and should have the same flowing shape that Alsie talked to you about earlier.
That tube-y part looks a lot better, but it could maybe use another branch of y on the dark space where her legs meet her torso. There just seems to be an odd absence of light there.
BTW, I just notice this, but her shoes are done very well! Good job on those