Painter's skill is evident, ultimately (6)
I believe the answer is:
artist
'painter's' is the definition.
(painter is an example)
'skill is evident ultimately' is the wordplay.
'skill' becomes 'art' (both can mean a talent).
'ultimately' says to take the final letters.
The final letter of 'evident' is 't'.
'art'+'is'+'t'='ARTIST'
(Other definitions for artist that I've seen before include "Creative or skilful person" , "Painter, sculptor etc" , "Painter; performer" , "Painter in dire strait" , "Painter, sculptor or skilled musician" .)