What could I do to make my belly button look better? (Photo)

Thank you for your question and pictures.  Women can develop lose skin around the tummy area due to weight gain and/or weight loss, pregnancy, poor skin quality etc.  If the skin has been stretched and has lost the laxity then unfortunately no amount of exercise will be able to tone that area.  The Belly Button can be corrected at the same time as a Tummy Tuck and the tummy would be completely flat with no excess loss skin.  The scar for a Tummy Tuck is hip to hip however hidden in the knicker line, so patients can still wear bikinis.  Overtime the scar will fade and mature becoming a faint line. A Belly Button surgery cannot remove all the loss skin above the belly button.  You are slim and have a great figure to get a good result. A tummy tuck removes all the skin and fat from the belly button to the level of the pubic bone. This can include the mons pubis in the surgery if this is also prominent. The benefits, thus are:
Removing excess abdominal skinEliminating stretch marks (if they are below the belly button)Creating a flatter, tighter, and more contoured abdomenIncreasing your self-confidenceLasting resultsPlease do have a consultation with a board certified surgeon.  All The Best