It is very common to notice an asymmetry more in a photo than in person. Your asymmetry is from both of your jaws, Your upper jaw is about 1.5mm to the right, rotated in the back (a yaw) and the left angle of your lower jaw is rotated out. All told that makes your chin point off to the right more in appearance than in distance. Meaning it looks more asymmetric than it measures as asymmetric. This is very common in subtle orientation issues in the jaws...it is skewed 2mm on one side, 3mm on the other, and the overall impact is larger than the increments that go into it. So a couple of ways to fix this, depending on how far you want to go--jaw surgery would be the most predictable/fastest way to fix it seeing as it involves both jaws. This is a bigger recovery, and would possibly require orthodontics to fix the bite. If you are OK with keeping the upper midline where it is (2mm discrepancy is considered OK) then you could do a genioplasty to center the chin and either reduce your left mandibular angle or augment the right one. You would just have to pick which side you liked better to determine, or work with your provider on some simulations. Based on what I see your right side is the better one (relative to your cheek) but you get to pick. With contouring the angle of the jaw, any imbalances in the rest of your lower jaw could be contoured at the same time to give a more symmetric appearance.
