Hi,
I have a Chibi character with a small neck and narrow shoulders.  When I bend her neck from side to side, part of the image where the shoulder is bends up with it.  See Screenshot.  How can I control the weight map or area of influence that the bone has?  Should I make the neck a separate image?  Thanks.
R

Show us the bone placements.


YouTube Tutorials Here

Try bring the Neck bone a little bit higher.
Also extend the shoulder part. Make it a bit rounded at the side.


YouTube Tutorials Here