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Basically, my whole left arm(including trap) is smaller than my right arm. It's not super noticeable, but me and my friends were jokingly flexing and they noticed my left arm being a bit smaller. Also, my left pec is bigger than right, everything else looks similar enough. Any suggestions if I should do one-arm exercises to even it out, or will it even out by itself since I'm still growing?(gonna be 16 on May 31st so still in teen years). I also have like 'small' winged scapula. It's not really noticeable when I normally stand, but when I flex my right trap it sticks out. I can't really flex my left trap, lol I don't even know... but it normal stance, my right wing seems bigger than left. Not super worried, just thinking if it'll fix itself through growing years, or if I should do something?