" So if someone were to say to me, "Keep your center toward your partner", I would ask them to clarify with a little more detail."
Indeed... as dancing is studied in more and more detail, it eventually becomes clear that each part of the body needs to be seperately treated with regard to three potential factors. Conceptually, one could make this decision for each cross section of the body from head to toe:
- alignement towards direction of movement
- alignment towards partner
- comparative alignment to body parts above and below.
If you look at the position at mid stride into step one of a top-quality natural turn for example, there are quite a buch of different alignments in use. Some body parts are quite square to the direction of movement. Others are turned almost sideways (feels like nearly backwards) to stay with the partner. Probably the arms are even turned sligly more than the shoulder/sternum.
But of course that is at a more advanced level - at the beginning we just worry about an initial orientation to the partner, and perhaps the proper orientation of the feet and leg swing when moving.