Loosen and unvelcro/unhook all the adjustable straps & attachments.
2. Stand up straight and get in your best posture(standing against a wall helps).
3. With your best posture put the brace on and Velcro/tighten/hook any straps so that the brace has a small amount of tension/tightness against your body.
***Wear the brace/corrector on top of a shirt for increased comfort.