I'm too long making pictures (6)

I believe the answer is:

images

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'pictures' is the definition.
('image' can be a synonym of 'picture')

'i'm too long' is the wordplay.
'too long' becomes 'ages' (I can't explain this - if you can you should give a lot more credence to this answer).
'im'+'ages'='IMAGES'

'making' is the link.

Can you help me to learn more?

(Other definitions for images that I've seen before include "Likenesses, representations" , "Pictures or photos" , "Mental representations or figures" , "Likenesses or effigies" , "Reflections in mirrors" .)

I've seen this clue in the Evening Standard.

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