Making smooth arts broadcast, Sky's brilliant feature (7,4)
I believe the answer is:
evening star
'brilliant feature' is the definition.
Although both the answer and definition are singular nouns, I cannot see how one could define the other.
'making smooth arts broadcast sky's' is the wordplay.
I cannot quite understand how this works, but
'smooth' could be 'even' (similar in meaning) and 'even' is found in the answer.
an anagram of 'arts' is 'star' which is present in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for evening star that I've seen before include "Description of Venus" , "one of 28 [SKYLIGHTS]?" , "What could be seen around sunset" , "Venus after sunset" , "Venus, perhaps" .)