I'm in an obscure nook making a garment (6)
I believe the answer is:
kimono
'a garment' is the definition.
(kimono is a kind of garment)
'i'm in an obscure nook' is the wordplay.
'in' is an insertion indicator.
'an obscure' indicates anagramming the letters.
'nook' with letters rearranged gives 'kono'.
'im' put within 'kono' is 'KIMONO'.
'making' is the link.
(Other definitions for kimono that I've seen before include "Long loose Japanese robe" , "Traditional robe in Japan" , "Loose robe, originally Japanese" , "wrapper" , "Kobe robe?" .)