Alien on film set, flipping good on camera (9)
I believe the answer is:
telegenic
'good on camera' is the definition.
(to be telegenic is to look good on camera)
'alien on film set flipping' is the wordplay.
'alien' becomes 'et' (extra terrestrial).
'on' means one lot of letters go next to another.
'film' becomes 'cine' ('cinema' in French).
'set' becomes 'gel ' (both can mean to harden).
'flipping' is a reversal indicator.
'cine'+'gel'='cinegel'
'et' after 'cinegel' is 'cinegelet'.
'cinegelet' written backwards gives 'TELEGENIC'.
(Other definitions for telegenic that I've seen before include "having broadcast appeal" , "Nice to watch" , "attractive on screen" , "appealing to viewers" , "Coming over on the tube" .)