One odd curtain out of place with clashing colours? (13)
I believe the answer is:
uncoordinated
'with clashing colours?' is the definition.
'one odd curtain out of place' is the wordplay.
'out of place' is an anagram indicator.
'one'+'odd'+'curtain'='oneoddcurtain'
'oneoddcurtain' with letters rearranged gives 'UNCOORDINATED'.
(Other definitions for uncoordinated that I've seen before include "Badly organised" , "Awkward" .)