What is the proper way to put on a bra?
Pull the band down in the back, so it is horizontal and parallel with the floor. It should be low and snug sitting just below your shoulder blades.
The most important part (which most women skip!), is to make sure your breasts are fully inside the cups of the bra. Bend forward at the waist, take your right hand and gather your left breast as far back as under the arm pit, pull forward and place completely into the cup. You are scooping all of the breast tissue and swooping it into the center of the cup. Now repeat with the other side. Stand up straight. You may need to grab the bottom of the wires and slide the bra right and left to get the center front to lay flat against your breast bone.
Re-check that the band is still low and snug situated under the shoulder blades, parallel to the floor.