How can I improve the appearance of my belly button after pregnancy and bad piercing? (Photo)

Thank you for your question.  Umbilicoplasty changes the position, size and shape of your belly button.  It's quite common, after pregnancy, piercing or as a result of a hernia around the belly button, that the attachment of the belly button to the deeper tissue is lost.  This results in what is commonly known as the 'outie belly button' or the shape is abnormal.  For some like yourself, most do not like the appearance.  Some umbilical hernias can be serious if not treated so please seek out a board certified plastic surgeon in your area.  You should have a private consultation to discuss desired results and see before and after pictures of previous patients.
All the best!

Thank you for sharing your question and photograph.  It appears that you only have a small amount of excess skin along the upper portion of your navel which can be repaired with an umbilicoplasty procedure.  With removal of a small crescentic segment of skin you should expect a flatter result.  Hope this helps.