Visionary woman and sweetheart regularly paint on flat rock (4,2,3)
I believe the answer is:
joan of arc
'visionary woman' is the definition.
The definition suggests a singular noun which matches the answer.
'sweetheart regularly paint on flat rock' is the wordplay.
'sweetheart' becomes 'jo' (Scottish term for darling or sweetheart).
'regularly' indicates alternate letters (regularly take one letter, leave next etc.).
'paint'+'on'+'flat'+'rock'='paintonflatrock'
The alternating letters of 'paintonflatrock' are 'anofarc'.
'jo'+'anofarc'='JOAN OF ARC'
'and' acts as a link.
Can you help me to learn more?
(Other definitions for joan of arc that I've seen before include "national heroine" , "Orleans girl" , "burning visionary?" , "French heroine" , "She was known as the Maid of Orleans" .)