Act over fickle destiny of film maker (4,6)
I believe the answer is:
walt disney
'film maker' is the definition.
I don't know anything about this answer so I cannot tell whether this works.
'act over fickle destiny' is the wordplay.
'act' becomes 'law' (law is a kind of act).
'over' says the letters should be written backwards.
'fickle' indicates an anagram (a fickle or changing form of the letters).
'law' back-to-front is 'wal'.
'destiny' with letters rearranged gives 'tdisney'.
'wal'+'tdisney'='WALT DISNEY'
'of' acts as a link.
Can you help me to learn more?
(Other definitions for walt disney that I've seen before include "Mickey Mouse creator" , "Animator and amusement park pioneer" , "film producer" .)