Great thoughts, yes I am very small framed, and the V neck is a nice idea to to showcase pendants. In any case, it looks lovely on you and I am enjoying your In Action photos!i think you have a much smaller frame. My necklace sits higher. Maybe you can clip it to the shortest and let it sit higher.
neckline is important. I wear v neck or low cut but never round shape.
neckline makes a huge difference