I ll make a subjective comment.
I think he has an old man’s face.
deep lines and thin nose makes him look like that. I mean, he has this clint eastwood type of old face. which is cool if you are going for it.
to make him younger though,
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I d try to soften the pronounced eye sacks.
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Soften the deep lines around mouth as they are powerful indicators of age.
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The bump&dent between eyebrows can be very very subtle or none.
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I d make the nose thicker.
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Although in your reference the ears are like that, lower and bigger ears mean more age. I d lift the ears up to match ear top and eyebrow axis.
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And I d either pronounce the trapezius or make a smaller chest. Someone who has that big of a chest should have a bigger trapezius .