Close up is favoured by snipers (8)
I believe the answer is:
headshot
'favoured by snipers' is the definition.
I don't know anything about this answer so I cannot tell whether this works.
'close up' is the wordplay.
I cannot quite understand how this works, but
'close' could be 'hot' (similar in meaning) and 'hot' is present in the answer.
The remaining letters 'heads' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
'is' is the link.
Can you help me to learn more?
(Another definition for headshot that I've seen is " Photo showing just the face".)