Revision tummy tuck? Belly button weird (Photo)

Dear UserChang,
I understand your concern. However, without a proper assessment, it would be difficult to determine what is wrong. It is best that you visit your plastic surgeon for further assessment or ask for a second opinion. Only after a thorough examination, you can get proper recommendations and advice.
Daniel Barrett, MDCertified, American Board of Plastic SurgeryMember, American Society of Plastic SurgeryMember, American Society of Aesthetic Plastic Surgery

Some of the excess skin around your belly button can be removed, but the scar will be at the edge. If it hypertrophies, steroid injections and micro-needling can be done to help soften the thick scar.

You're absolutely right that appearance is most likely from excess skin that still presence above your belly button. Short of doing a full abdominolplasty or a reverse tummy tuck, probably the simplest thing to do excise or remove that extra skin that's sitting around the umbilicus, which may not be a great option since you tend to form hypertrophic scars. As I remind my patient doing consultations, sometimes one has to make choices from not very good options. Hope you found this helpful!