Revamp ended after performance (5,2)

I believe the answer is:

doing up

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

'revamp ended after performance' is the definition.
I can't tell whether this defines the answer.

'ended after performance' is the wordplay.
'ended' becomes 'up' (up can mean finished or at an end).
'after' says to put letters next to each other.
'performance' becomes 'doing' (synonyms).
'up' after 'doing' is 'DOING UP'.

Can you help me to learn more?

I've seen this clue in The Daily Express.

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.