Healthy nurse takes down 3's scary picture (9)

I believe the answer is:

halloween

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'3's scary picture' is the definition.
I can't judge whether this defines the answer.

'healthy nurse takes down' is the wordplay.
'healthy' becomes 'hale' (hale can mean fit and healthy).
'nurse' becomes 'EN' (abbreviation for state-enrolled nurse).
'takes' indicates putting letters inside.
'down' becomes 'low' (synonyms).
'hale'+'en'='haleen'
'haleen' going around 'low' is 'HALLOWEEN'.

Can you help me to learn more?

(Other definitions for halloween that I've seen before include "Trick or treat time" , "movie with many cuts" , "The eve of All Saints' Day" , "annual celebration" , "Light-in-pumpkin festival" .)

I've seen this clue in The Independent.

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