How to make my jaw less square (female)? (Photos)

My jaw is really square and kind of rounded at each side. It is pretty much a straight line across from the front view and a little under projected from the side. I really want a more heart shaped face. A longer pointy chin vertically (most importantly), reduce the sides as marked by blue in the photos and have more projection from the side profile. Grateful for any advice so I know what to be researching!