This is a very grim visual, I love it.
It's hard what to say or improve as you had a clear vision in mind. The only thing I can think of is her pose being a little too symmetrical. Maybe try adjusting the position of her limbs a little to see if it improves? For example, maybe bend the legs a little but have one bent more than the other, since she's floating. Or maybe bend her fingers a little different from each other so it's not the same pose on each side.