One's appeal right for inspiring artist (8)
I believe the answer is:
pissarro
'artist' is the definition.
(I've seen this before)
'one's appeal right for inspiring' is the wordplay.
I cannot really see how this works, but
'one's' could be 'is' (Roman numeral) and 'is' is found in the answer.
'appeal' could be 'sa' (old-fashioned abbreviation for sex appeal) and 'sa' is found within the answer.
'right' could be 'r' (common abbreviation) and 'r' is found in the answer.
'for' could be 'pro' (as in being 'pro' something) and 'pro' is found within the leftover letters.
This accounts for all the letters.
This explanation may well be incorrect...
(Other definitions for pissarro that I've seen before include "Camille --, French painter" , "Camile, Danish-French impressionist painter, d.1903" , "Camille --, French artist" .)