Thank you for your question.
I would recommend scheduling a consultation with a board certified plastic surgeon to have a physical examination performed and an accurate opinion on what you may be a good candidate for. It seems from what you are describing you may benefit from a breast lift to reduce the sagging of your breasts and nipple tattooing to give the appearance of larger nipples/areolas. Best of luck in your endeavors.
James Fernau, MD, FACS
Board Certified ENT
Board Certified Plastic Surgery
Member of ASPS, ASAPS, ISAPS, The Rhinoplasty Society, AAFPRS, OTO/HNS, ASLMS, International Federation for Adipose Therapeutics & Science