Wine created by one artist (7)
I believe the answer is:
madeira
'wine' is the definition.
(Madeira is an example)
'created by one artist' is the wordplay.
'created' becomes 'made' (making is a kind of creating).
'by' means one lot of letters go next to another.
'one' becomes 'i' (Roman numeral).
'artist' becomes 'ra' (Royal Academician, member of Royal Academy of Arts).
'made'+'i'+'ra'='MADEIRA'
(Other definitions for madeira that I've seen before include "Fortified wine from Atlantic island" , "Fortified Portuguese wine" , "A fortified wine, a rich sponge" , "Atlantic territory" , "drink" .)