Hello! Awesome painting, this character looks interesting.
One thing that seems weird to me is her right eye, it seems to go far too much into the right, and it is literally right next to the ear, which isn't how eyes work! The neck gearpiece also seems out of perspective, or at least, it is tilted far too much.
Another weird thing is the amount of lines you maintain, like in her left hand. The lines are very visible, but the main issue with the hand is the lack of definition, the way it is rendered makes it seem like a wet piece of paper. This brings me to the way you've rendered everything, the values seem all right at first glance, but there is an immense amount of contrast in certain places, like her face and arms. There is too much light, and even the darks, aren't that dark. For example, her hand has pure white in it, which is incredibly reflective, and isn't realistic to how skin works.
Her nose seems a bit too flat, there is usually some kind of break or at least a bend between the eyes. Finally; I like the colors, and they seem relatively varied, but it is all one purple color, which you can argue is stylized, but in the end, skin often has more color to this. Anyway, I like how the shadows are a blue, while the lights make the purple color of her skin warmer. And about overall color, you're using a sort of redish yellow for her hair, which contrasts against her skin, great. But I think there is still too much purple overall, and this could be adjusted easily!
Either way, cool painting!