
For me one of the biggest challenges is getting a nice full shoulder rotation combined with a body turn. The problem for me is similar to the combined head turn with head up and down, there's no easy way to combine the effects of two smart bones (that I know of). Plus, you can't animate hide edge

One of the artifacts I get is the outline for the shoulder rendering on top of the arm when it's behind in the turn. I've tried a number of techniques (currently using patch layers) with varying degrees of success, but always have some artifact that is not quite right. (If people have good suggestions on that I'd love to hear.)
Anyway ... it just hit me today ... Use FBF to paint the lines the way you want (including painting out strokes)! Still looking for the perfect shoulder rotation and body turn technique

This is probably obvious to all the experts, but for those new to FBF and/or animation I put up a quick explanation here
https://www.youtube.com/watch?v=mBXrmqM0AS0