Fancy paper’s used with skill on small items for repair (5,5)
I believe the answer is:
spare parts
'items for repair' is the definition.
(items used when doing repairs)
'fancy paper's used with skill on small' is the wordplay.
'fancy' is an anagram indicator.
'used with' says to put letters next to each other.
'skill' becomes 'art' (both can mean a talent).
'on' says to put letters next to each other.
'small' becomes 's' (abbreviation - e.g. clothes size).
'papers' with letters rearranged gives 'sparep'.
'sparep'+'art'+'s'='SPARE PARTS'
(Other definitions for spare parts that I've seen before include "Pare straps (anag.)" , "offered for replacements" , "such may effect repair" , "Replacement components" , "accessories" .)