Odd characters in Bray think this method could be used to decorate fabric (5)
I believe the answer is:
batik
'this method could be used to decorate fabric' is the definition.
'batik' can be an answer for 'method' (I have seen 'Method of colouring' mean 'batik' so perhaps 'method' could also mean 'batik'). I am not sure about the remainder of the definition.
'odd characters in bray think' is the wordplay.
'odd characters in' indicates alternate letters (the letters at odd-numbered positions).
'bray'+'think'='braythink'
The alternate letters of 'braythink' are 'BATIK'.
Can you help me to learn more?
(Other definitions for batik that I've seen before include "Method of colouring" , "Javanese craft" , "Indonesian cloth designs" , "Fabric-printing process" , "Eastern method of printing textiles" .)