Revealed bald emu pic was doctored (4,6)

I believe the answer is:

made public

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'doctored' is the definition.
The answer and definition can be both related to change as well as being past participle verbs.
Perhaps they are linked in a way I don't understand?

'revealed bald emu pic' is the wordplay.
'revealed' is an anagram indicator.
'bald'+'emu'+'pic'='baldemupic'
'baldemupic' is an anagram of 'MADE PUBLIC'.

'was' is the link.

Can you help me to learn more?

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

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