So i have a question first, the pink purple ellipses of energy around her, how did you do it so nicely, looks amazing.
The readability on the fingers is fine as far as i am concerned.
However, if you want to show volume, direction and such things, it is easier if you use a combination of lighter and darker shades . Seeing on especially her left hand, it is almost completely black. The darker the shade, the less information, the less we can tell the shape. So i would use maybe a purple or pink light beneath that hand throwing some contouring light on her hand.
im not sure how to do it, but someone on your level can figure it out im sure
nicely done drawing, i dig it