Erected film set with alien looking good on screen (9)
I believe the answer is:
telegenic
'erected film set with alien looking good on screen' is the definition.
I can't judge whether this definition defines the answer.
'erected film set with alien' is the wordplay.
'erected' is a reversal indicator (in a down clue, letters go up).
'film' becomes 'cine' ('cinema' in French).
'set' becomes 'gel' (both can mean to harden).
'with' says to put letters next to each other.
'alien' becomes 'et' (extra terrestrial).
'cine'+'gel'+'et'='cinegelet'
'cinegelet' written backwards gives 'TELEGENIC'.
Can you help me to learn more?
(Other definitions for telegenic that I've seen before include "Coming over on the tube" , "Nice to watch" , "having broadcast appeal" , "attractive on screen" , "appealing to viewers" .)