Stop media representation — it’s laid on thick (9)

I believe the answer is:

impastoed

'laid on thick' is the definition.
(impasto is a style of painting using thick layers)

'stop media representation' is the wordplay.
'representation' indicates anagramming the letters.
'stop'+'media'='stopmedia'
'stopmedia' with letters rearranged gives 'IMPASTOED'.

'it's' acts as a link.

I've seen this clue in The Times.

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