How can I make my smile symmetrical permenantly? (photos)

I have a downturned mouth when I don't smile and my bottom lip is larger than my top lip. When I smile, the left side has a sharp corner and the right side looks more rounded. You can also see more of my gums on the right side. How can I make my smile more symmetrical? I know that botox could help but I would prefer it to be permanent. Would a lip lift or a corner lip lift help? I would also like to make the nasolabial folds symmetrical if possible. Any help would be appreciated! Thanks.

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