Crossword Genius

Improving at making a stage entrance (6,2)

Ross

I believe the answer is:

coming on

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

'improving' is the definition.
The definition and answer can be both related to change as well as being present participle verbs.
Maybe you can see a link between them that I don't see?

'at making a stage entrance' is the wordplay.
I cannot really understand how this works, but
'at' could be 'on' (location) and 'on' is found in the answer.
The remaining letters 'coming' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...

Can you help me to learn more?

I've seen this clue in the Evening Standard.
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