How important is it to properly close before ending a Qigong practice?
Openings and closings done to honor the practice are not essential to the practice, but they are nice to do. Closing by smoothing your energy or storing energy is part of many forms of Qigong. It really depends upon the particular form. Try different practices and let your own body guide you in developing your own routine. Also, a nice way to end any Qigong session is with a short self-massage.