Signed revised plan (6)
I believe the answer is:
design
'plan' is the definition.
(design is a kind of plan)
'signed revised' is the wordplay.
'revised' is an anagram indicator.
'signed' anagrammed gives 'DESIGN'.
(Other definitions for design that I've seen before include "Aim -- decorative pattern" , "Prepare a plan for something to be made" , "Purpose, pattern" , "Plan for specific purpose" , "Draw a plan or scheme" .)