How long do you think it will take to correct my overbiting? (photos)

Actually, when six years ago my doctor finished my brace treatment, she didn't tell me to wear my retainer for a long long time. It is also my fault not to wear them faithfully. So, I will probably start wearing braces again in the next months. But I wanna know how long will it take this time to finish my treatment, because I'm in my 20s. And as u can see my my jaw is pretty long , so will braces affect them aesthetically? because I don't really dig my side profile and my long jaw.

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