Put things right by sending me back to finish (5)
I believe the answer is:
emend
'put things right by' is the definition.
I can't judge whether this defines the answer.
'sending me back to finish' is the wordplay.
'sending' indicates anagramming the letters (letters are sent to different positions).
'back' becomes 'end' (I've seen this in other clues).
'to finish' says to put letters next to each other (some letters go after or 'finish' others).
'me' anagrammed gives 'em'.
'em'+'end'='EMEND'
Can you help me to learn more?
(Other definitions for emend that I've seen before include "Rectify" , "Edit, improve" , "Remove errors" , "Make changes to (a text)" , "Edit; make alterations to a draft" .)