Create flier that's OK (6,2)
I believe the answer is:
forget it
'that's ok' is the definition.
('forget it' can mean something's OK or unimportant)
'create flier' is the wordplay.
'create' becomes 'forge' (I've seen this in another clue).
'flier' becomes 'tit' (type of bird).
'forge'+'tit'='FORGET IT'
(Other definitions for forget it that I've seen before include "There's no need for apologies" , "Not a chance" , "Think no more of the matter" , "Let it go!" , "ignore something" .)