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bro ur still a child just live your life💔 u looking good already, just keep following healthy lifestyle, idk.. sleep 8 hours, drink lots of water, eat healthy food ,do sports, dont forget about your tongue and body posture, keep it correct al the time,
Maybe wear braces if you have a narrow palate so your maxilla can develop well
and during sleep don’t mouth breathe, use mouth tape, and sleep on your side, sometimes switching it, but dont sleep on your back cuz it would be hard to keep mewing if u will lay on your back cuz of gravitation