I'm hesitant to critique fits because I suspect amateur photography exaggerates flaws that are not noticed in real life.
This looks pretty good to me.
I suspect the ripples in the arms and back are less noticeable then the camera implies. Clothes are meant to be lived in, not modeled.
I wonder if you might benefit from a softer shoulder and moving the shoulder seam in a bit.
I echo the others, the back seems to hang on your rump. Maybe ease the waist a bit would fix that.
As others have mentioned, Mafoofan has a very good eye for these things.