What should my personal orthodontist do for my upper teeth to move backward? (photos)

My orthodontist said that my teeth is perfect since it has 3mm space between the upper and the lower, but for me, it is not. I want to push the upper teeth backward so it will look better. She did not recommend or do not want to remove one tooth from my upper teeth since it will create space. She also said that I have thin lips that's why my upper teeth is seen to be forward.

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