The impression you stand to make (8)

I believe the answer is:

footmark

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'the impression' is the definition.
(thesaurus)

'you stand to make' is the wordplay.
'you stand' becomes 'foot' (I can't explain this - if you can you should believe this answer much more).
'to make' becomes 'mark' (marking is a kind of making).
'foot'+'mark'='FOOTMARK'

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I've seen this clue in the Evening Standard.

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