4 weeks post mastopexy. One nipple appears lower than the other. Is this normal? (Photo)

The wrinkling will go away as the swelling subsides. You may find you become more even as you heal. Just be patient. Please discuss any concerns you have with your surgeon.

Dear antonice18,
I understand your concern and it is quite normal to be concerned about the outcome following a breast lift surgery. However, you are still in the very early stages of the healing process.Your will need to be patient at this moment and follow what your surgeon has instructed you to do post operatively.At the early stage of the healing process, the tissues are still swollen. Once the swelling subsides  you will be able to see the final result of your surgery.
Daniel Barrett, MD
Certified, American Board of Plastic Surgery
Member, American Society of Plastic Surgery
Member, American Society of Aesthetic Plastic Surgery

You are still recovering from surgery and are not at your final result yet.  I recommend discussing your concerns with your surgeon as he/she is most familiar with your surgical plan and how you've been progressing through recovery.