Pilates
Oily fish for skin
Sleep
Teeth - crest whitening strips from cali white do really work
Not really sold on idea of overly “casual/ funky” wear (highlights and a spiky cut not hugely flattering)
oh, and the “can I speak to a manager?” haircut
If that’s your style then go for it, but I think a neutral, natural, modern classic look is more flattering? Sort of not twin set and pearls but not hoodies either?
“Young” styles on older people not good IMO (yeah 45 year old blokes in tight Superdry t shirts strained over beer tums I’m looking at you
)
Too much obvious processing (coloured hair or coloured nail varnish or overly threaded brows) not hugely flattering)
Re:wrinkles, I think paradoxically trying to conceal them draws more attention to them?
I’ve noticed women/men wearing glasses as a “trick” to conceal wrinkles which does work but depends if you want your date to fall down in horror when you take them off 
Smiling can make anyone look better (may not work if you’re a judge or undertaker or copper)
Of course ultimately wear what makes you happy, but those are my observations 