My profile while I smile is much better than relaxed.
If your occlusion (tooth mesh) is normal then it is usually prudent to camouflage a relatively week chin with augmentation. As an adult, your facial growth is complete and there are many ways that would be easier, less expensive and yield a satisfactory result than to undergo surgery that would reposition your upper and lower jaws. A lateral x-ray (cephalogram) is really the best way to diagnose bimaxillary protrusion. Judicious artful use of implants or even a horizontal advancement genioplasty may be the best way to give your face "foundation" by augmenting your chin. See a board certified plastic surgeon who is trained in craniomaxilofacial surgery to discuss your options. Best wishes.
