wow, it's very beautiful and impressive, love the details! The ray and mussels are really nice too ^^. Also nice to see some narrative elements in it.
If I may suggest something (since you say you are still changing things): the blue shadows around her face, especially round her eyes, it makes her look tired or worse.. I don't know what you can do about it since it's the color of the shadow you use, maybe blur it out a bit? Or make the pink aspect a bit pinker/redder? That might look more alive. Or you have done this on purpose and then you can forget what I said
Another thing: she has her hand on that stone right? That's really well done. But her left arm (for us on the right), it is too long I think. It's not impossible to have her hand behind her other elbow, but I think that angle isn't accurate if you want to achieve that. Now it looks like her left upper arm is also pointing towards the ground, while I think you wanted it to be more pointed forward. If you point an arm more forward, or bowed, it gets shorter, perspective wise. It looks like you did that with her lower arm (though there could be more shadows to show it's angled), but not with her upper arm.
Aw, I hope you don't mind me giving tips/critique. I myself like to get some help if something is wrong, so I'd like to help others too. The textures, structure and composition in this artpiece are really well done!