YOU SAID:

my toe next to my big toe is bigger than my big toe

INTO JAPANESE

私の親指の隣の私のつま先は私の親指よりも大きいです

BACK INTO ENGLISH

My toe next to my thumb is bigger than my thumb

INTO JAPANESE

私の親指の横にある私のつま先は私の親指よりも大きい

BACK INTO ENGLISH

My toe next to my thumb is bigger than my thumb