If balanced, and with having good oral stability, the shoulders have equal balance. What generates power and direction on one side, is the otherside. What generates power from the right, isthe left shoulder and back foot. By turning the left shoulder it creates balance of the back foot. The reverse effect happens with the other side, the right shoulder stabalises the front leg and shoulder, while the back leg generates the drive. I personaly like to see a wider back foot so the Heel can see the target, feet being as wide as your walking gait. That being your natural balance, with the front foot giving better direction by pointing at the target and having the ability to turn for protection.