Zero mark, picture award! (5)
I believe the answer is:
oscar
'picture award' is the definition.
'oscar' can be an answer for 'award' (Academy Award). I'm unsure of the 'picture' bit.
'zero mark' is the wordplay.
'zero' becomes 'O' (O resembles 0).
'mark' becomes 'scar' (mark left by an injury).
'o'+'scar'='OSCAR'
Can you help me to learn more?
(Other definitions for oscar that I've seen before include "heard on the radio after November" , "to wit involved in row" , "Statuette awarded by Hollywood Academy" , "Some players are given this" , "Code word for O" .)