What does the cryptic crossword clue "Mistake made teen change for the better (8)" mean?

The definition is "better". The wordplay uses an anagram. anagram of MADE (synonym="MADE") + TEEN (synonym="TEEN") = EMENDATE The answer is EMENDATE.

Mistake made teen change for the better (8)

Times Cryptic #28846 | 4 Down | 2024-02-22 flower