Any suggestions for youthful smile? (photos)

My top 2 front teeth were chipped (still are) & filed down. I'm concerned they're now unnatural & "elderly" looking: "old womanish," short, stubby, square shaped & too flat. Based on the length & shape of my front incisors, what would you assume my age range to be? Veneers are not in my budget, but should I have my teeth rounded/reshaped for a more youthful appearance? I do plan on whitening them! Apologies for the numerous photos.

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