Break sculpture perhaps and begin again (7)
I believe the answer is:
restart
'begin again' is the definition.
('start' can be a synonym for 'begin' so perhaps 'restart' is OK for 'begin again')
'break sculpture perhaps' is the wordplay.
'break' becomes 'rest' (resting is a kind of breaking).
'sculpture perhaps' becomes 'art' (sculpture is a kind of art).
'rest'+'art'='RESTART'
'and' acts as a link.
(Other definitions for restart that I've seen before include "Jumping the gun will mean" , "Begin anew" , "begin afresh" , "Resume" , "Commence again" .)