Qualifications
You’ll need graduate med school, of course and do your residency in plastic surgery.
You need to be a board licensed cosmetic surgeon. Nobody gets to hold a scalpel up to a patient without being licensed, no matter how good your intentions are.
You must be trained by the organization that is setting up the program. Most all will fly you out to wherever they do the training and for general meetings.
You will have to be smart and brave and kind and compassionate and good with people and puppy dogs and like rainbows. (Well, maybe not necessarily the last two).