From the photos you have provided, you may be a good candidate for Buccal Fat Removal, and or Chin Reshaping to help achieve some definition in your lower face. I would recommend an in-person consultation with a board-certified Plastic or facial Plastic Surgeon who is well experienced in facial work. He/she will be able to explain various options to you, and what kind of surgical options are available to help you achieve the shape you are looking for. Best of luck. Greg Bran MD PhDDual Board Certified Facial Plastic Surgeon
Options to consider are facial defatting though buccal lipectomies and perioral liposuction as well as chin reduction to reduce both its width and vertical length.