Gave the impression of a paper made over by the editor (8)
I believe the answer is:
appeared
'gave the impression' is the definition.
The answer and definition can be both related to change as well as being past participle verbs.
Perhaps there's an association between them I don't understand?
'a paper made over by the editor' is the wordplay.
'made' indicates an anagram.
'over' indicates putting letters inside.
'by' is a charade indicator (letters next to each other).
'the editor' becomes 'ed' (abbreviation).
'paper' anagrammed gives 'apper'.
'a' going into 'apper' is 'appear'.
'appear'+'ed'='APPEARED'
'of' is the link.
Can you help me to learn more?
(Other definitions for appeared that I've seen before include "Seemed - performed - emerged" , "Turned up" , "published" , "Came into sight" , "Became visible" .)