I'm taking a long time making representations (6)
I believe the answer is:
images
'representations' is the definition.
(image is a kind of representation)
'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'
'making' is the link.
(Other definitions for images that I've seen before include "Visual or mental representations" , "Likenesses or impressions" , "Photos or representations" , "Ageism (anag)" , "Visual counterparts in lens or mirror" .)