What can I do about my asymmetrical jawline and uneven chin? (Photo)

I believe I have a cleft chin that is unsymmetrical with the left side being shorter. My jawline is also very unsymmetrical with the right being longer than the left almost as if a bit of my left jaw didn't develop properly. It is most clear when I smile. What could be done about this and what would the approximate cost be in the U.K. Thank you

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