Possible Clues:

• Aims & Co, put together bit by bit (6)
• Many a stained glass window
• Subway tunnel art, perhaps
• Assemblage that often floored the Romans in Britain
• Set pieces?
• Picture of small tiles
• Fountain basin feature
• There's little that goes into the making of this sort of law
• Just picture how there can to so many bits of the law
• Picture made of fragments