
I tried to implement what I said about the different parts feeling disconnected. Note the lack of gap in the highlight on the tail.
The shoulders were off because you had some nonsense lighting: the arm was lit from the left, while the rest of the body is lit from the right, and the shoulders were largely in shadow when they had no reason to be.
I've remedied this, I think. The shoulders flow smoothly into the arms. There are shadows on the upper arms, the highlight doesn't continue there - that's because they're orientated in a way that they wouldn't reflect the light directly. I also gave the shoulders a bit more volume, they were sloping unnaturally before. Real foxes don't really have shoulders like this, but an anthro fox would need shoulders to be able to move their arms in a human-like way.
I didn't really do anything with the hands because I couldn't tell what poses they were meant to be in. I'm sure there's a way to improve them, I just didn't want to spend time drawing the wrong pose xP
I tweaked the feet both to give them more volume (the upper legs overhang and cast a shadow on the lower legs), and to make the left leg (viewer's right) match the proportions of the other leg.
I also tried to adjust the clothing a bit. I have the jacket a bit more thickness, since it looked like it was bulky in the front, but paper-thin in the back. I got rid of the wild highlights on the back of the scarf, as they were distracting and there wouldn't be much light there anyway. I also tweaked the 2nd darkest purple in the scarf to make a better transition colour between the other two purples, it was a bit dark before.