Over bite and teeth not centred after braces. (photos)

I had my braces off last week and I'm not happy with my teeth now. I had overcrowding and my orthodontist was meant to take one of my back teeth out but he forgot to do this at the beginning of my treatment and didn't remember till 3 months into it, but he didn't remove it and tried to fit it in. This has now left me with a bigger over bite than when I started and my teeth have shifted to the right and its hard to bite things with my front teeth. What can be done? Will I need braces back on?

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