Can anything be done to specifically change the tooth shape and allow more if my smile to show? (Photos)

I’ve had braces twice in my life. Overall I am not happy with how my teeth and smile look even after braces. I gave strangely shaped teeth and they are stained from years of coffee and wine drinking. Whitening does absolutely nothing. :( I’ve looked into porcelain veneers, but I am afraid of looking like I have a mouth full of dentures. (I’ve seen waaay to many veneer fails.) can anything be done to specifically change the tooth shape and allow more if my smile to show?