Know-it-all sheep's reviewing story copyright (5,4)

I believe the answer is:

smart alec

I'm a little stuck... Click here to teach me more about this clue!

'know-it-all' is the definition.
I know nothing about this answer so I can't tell whether this works.

'sheep's reviewing story copyright' is the wordplay.
'sheep's' becomes 'ram's' (ram is a kind of sheep).
'reviewing' is a reversal indicator (I've seen 'review' mean this).
'story' becomes 'tale' (synonyms).
'copyright' becomes 'C' (as in the copyright symbol, a C in a circle).
'rams' reversed gives 'smar'.
'smar'+'tale'+'c'='SMART-ALEC'

Can you help me to learn more?

(Other definitions for smart alec that I've seen before include "insufferable type" , "Clever person" , "Clever Dick" , "wise guy" , "annoying person" .)

I've seen this clue in the Sydney Morning Herald.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.