Cowboy film character, in audition, shows jumping technique (7,4)
I believe the answer is:
western roll
'jumping technique' is the definition.
The definition suggests a singular noun which matches the answer.
'cowboy film character in audition' is the wordplay.
'cowboy film' becomes 'western' (I've seen this before).
'character' becomes 'role' (synonyms).
'in audition' indicates a 'sounds like' (homophone) clue (audition can mean hearing).
'role' is a homophone of 'roll'.
'western'+'roll'='WESTERN ROLL'
'shows' acts as a link.
Can you help me to learn more?
(Other definitions for western roll that I've seen before include "Method used to clear a bar" , "Jumping style" , "those facing the high jump may use" .)