Have another shot at reforming Terry (5)
I believe the answer is:
retry
'have another shot at reforming terry' is the definition.
I can't judge whether this defines the answer.
'reforming terry' is the wordplay.
'reforming' is an anagram indicator.
'terry' with letters rearranged gives 'RETRY'.
Can you help me to learn more?
(Other definitions for retry that I've seen before include "take second opinion on case" , "Hear (a case) again" , "Make a further attempt" , "Have another go" , "Put on trial again" .)