His brushwork should improve the street scene (7)
I believe the answer is:
sweeper
This clue might be a double definition.
'his brushwork should improve' is the first definition.
Although both the answer and definition are singular nouns, I don't see how one could define the other.
'street scene' is the second definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Perhaps there's an association between them I don't understand?
'the' is the link.
Can you help me to learn more?
(Other definitions for sweeper that I've seen before include "Soccer defender" , "cleaner" , "Back" , "'Football defender, carries a brush (7)'" , "Soccer player" .)