It appears that a chin implant would make a beautiful difference to your jawline. Truthfully, however, without a physical examination, it is impossible to determine what size you would need. At the very least, a view of the full face would be helpful, because faces are not just disparate parts that assemble to make a whole, but should have harmony (which manifests as beauty) when these different parts properly relate to each other. As a board certified plastic surgeon, I prefer to insert the implant intraorally, rather than putting a scar on the outside of your chin. I often carve implants to perfectly fit my patients’ anatomy. Please consult with a board-certified plastic surgeon for an in -person consultation to ensure the best outcome.