Is there a way to fix my uneven smile lines when smiling? (Photos)

Firstly, I think that you look fine the way that you are. Nobody exactly same on both sides. However, idf this line bothers you something like Retylsne Defyne can be used to try to fill it. My biggest problem with this line is that as soon as I fill it the patient makes a smile to test it and I think that if the patient did not move for a couple of hours that this might settle in better. I tell them to try to not "test " this in hope that this difficult to treat area softens some. I never promise to remove the line, just soften it. 

Every single individual on this planet has some facial asymmetry which is being manifested in different ways. There's absolutely nothing wrong with your smile. Good luck from New York City

Might try HA fillers with micro Botox injections to the smile lined side. But MUST be seen in person first to be examined and than explained options.