Will having braces widen my lower jaw? Or will it elongate my face? Will my chin protrude out?

My face is long oval in shape . I dont have a wide lower jaw due to which my lower face looks ackward kinda too much v shaped and chin also looks a little protuded. And my upper jaw teeths seem to be moving forward . Am worried if I use braces will it increase the length of my face? or will my fave widen?And wont my chin look more protruded out and awkward??

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