Wow, that was fast. Thank you!
I think the arms are weird because they are a little thin, and the shoulder doesn't look properly connected to the body. (I think if her right shoulder was "overlapping" the body just a tiny bit, and the left shoulder was a little hidden behind the body, it should be perfect. In a 1/2 turn, the shoulder farthest from the viewer shouldn't be completely visible, otherwise it'll look like the body is front facing the viewer.)
Also, hands are....difficult to draw, as a nice way of saying it, so you shouldn't feel bad about that. :V