YOU SAID:

Once I was seven years old and I thought the world was super duper cold with my tiny feet

INTO JAPANESE

かつて私は7歳で、小さな足で世界は非常に寒かった

BACK INTO ENGLISH

Once I was 7 years old and the world was very cold with small feet

INTO JAPANESE

かつて私は7歳で、足が小さくて世界はとても寒かった

BACK INTO ENGLISH

I used to be 7 years old and my legs were small and the world was very cold

INTO JAPANESE

私は7歳で、脚が小さく、世界はとても寒かったです

BACK INTO ENGLISH

I was 7 years old, my legs were small and the world was very cold

INTO JAPANESE

私は7歳で、足が小さく、世界はとても寒かった

BACK INTO ENGLISH

I was 7 years old, my legs were small and the world was very cold