What can I do about a misshapen areola? (Photo)

This could probably be fixed with an in office revision with some local anesthesia. Take out some skin to make it more symmetrical.

When aroused or cold, the muscle fibers cause the nipples to contract and harden. They cause change to the size and shape of the areola, hardening and elevating the nipple and raising goosebumps all over the breast. When muscles contract, they make an attempt to release the fluid each gland has produced, and so the areole appears bumpy.
Schedule a consultation with a ABPS board certified plastic surgeon who can evaluate your breasts and determine whether an areolar revision is likely to improve your misshapen scar.

Dear Stardust_Valerie,
it is hard to tell for sure without an examination. Based on your photo, it looks like you would need a surgical procedure in order to make it more symmetrical. If you are considering a surgery, I would suggest you to consult a board-certified plastic surgeon. Only after a thorough examination you will get more information and recommendations.
Daniel Barrett, MD
Certified, American Board of Plastic Surgery
Member, American Society of Plastic Surgery
Member, American Society of Aesthetic Plastic Surgery