Your chin is over prominent anteriorly, but also too short vertically, therefore you need a two dimensional osseus genioplasty: -anterior reduction -vertical lengthening I did not see your anterior horizontal width, may it need additional changes or stay unchanged can be discussed. One old fox trick is using the sliced bone in the deprojection to augment the vertical height; other option is performing an oblique backwards sliding genioplaty, but this one poses the risk of producing upper neck / mouth floor muscles flaccidity and a subsidiary double chin deformity, so I am more prone for the two dimensional genioplasty. Under no circumstances you should accept chin implants or fillers, very problematic and unable to perform the work you need. Chin shaving would procude a droopy chin deformity, a very dangerous technique, and would not increase terribly short vertical height (do you imagine your chin only deprojected and as short as it is now?). If you wish better grounded opinion please do post or send privately well lit, focused and standard images: frontal, both lateral and both oblique views. Feel free to request any additional information from me.