Can my teeth come a little backwards and how will my bite turn out off top teeth braces? (Photo)

I've had braces on for 8 months now. I got them for a bad twist on one of my top teeth (as pictured below) the transformation and how straight that tooth has gone is amazing. However coming the to the end now I he my power chain on. Not all the gaps are closed but I'm worried about my overbite and the way my teeth protrude. I don't mind a slight overbite but with more powerchains is it likely my teeth will move much more?

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