There's anatomy problems.

the biggest is the arm fix, but then it becomes apparent the whole body is elongated and stylized an ways that might confuse the viewer.
But that's not even even ,

Sorry for mouse drawing, no time. Torso, tummy, chest, everything needs reassessment.
I suggest you do not work such portraits in halves, draw the whole body, leave the cropping for the end render.
EDIT: actually I'm pretty off too. This is useful to you:
