I'm taking a long time to produce pictures (6)
I believe the answer is:
images
'pictures' is the definition.
('image' can be a synonym of 'picture')
'i'm taking a long time' is the wordplay.
'taking' is a charade indicator (letters next to each other).
'a long time' becomes 'ages' (I've seen this before).
'im'+'ages'='IMAGES'
'to produce' is the link.
(Other definitions for images that I've seen before include "Mental representations or figures" , "Visual or mental representations" , "Reflections in mirrors" , "Pictures; metaphors" , "'Reflections, likenesses (6)'" .)