When evaluating a scoliosis radiograph, it is a useful practice to flip the film (if the X-ray was taken front-to-back, known as anterior to posterior, or A-P projection) as if you are viewing the patient from the back.
When it comes to scoliosis specific exercises, it is NOT just by bending your spine to the other side, or hanging off the chin-up bar. In order to slow down curve progression with conservative treatment, you need to expand the thorax and ribs on the concave side, de-rotate and de-tether the spine as you stretch longitudinally. For significant curvatures, a brace may be needed to complement the exercises.