Excellent job so far. I'd say bring the clavicle down a bit so it isn't such a broad V-ish shape as well as making the breast on the left slightly bigger to match with the forward facing one; not too much, but ever so slightly.
If you're going for a slightly more stylized look, then your anatomy is fine. If not, then I recommend making her neck thicker and her shoulders a little wider. Also, the fore arm is always smaller than the upper arm, whether the character is overweight or not. Hope this helps with your practice in the future! c: