I'm given time to create impression (5)
I believe the answer is:
image
'impression' is the definition.
(I know that image is a type of impression)
'i'm given time' is the wordplay.
'given' means one lot of letters go next to another.
'time' becomes 'age' (an age is a period of time).
'im'+'age'='IMAGE'
'to create' acts as a link.
(Other definitions for image that I've seen before include "Optical counterpart in mirror" , "Portrait, picture" , "Likeness, might be spitting" , "Likeness or mental picture" , "Mental picture; idol" .)