Could I ever have a beautiful natural smile? (Photos)

Is it ever possible to have a beautiful smile? Will my front teeth ever touch? Would braces fix my problem? Could I ever close the gap? haven't sucked my thumb in 10 or years but I am now stuck with horribly buck teeth aswell as an overbite and now a small lisp. I get pain at times from clenching my back teeth as my front 6 teeth dont touch. I also have a gap in my front teeth which I am not sure if the thumb sucking has caused this

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