If you don't look at it so closely, it's very good (8)
I believe the answer is:
peerless
'very good' is the definition.
Both the answer and definition are adjectives. Maybe you can see a link between them that I can't see?
'if you don't look at it so closely' is the wordplay.
I cannot really see how this works, but
'look' could be 'peer' (peering is a kind of looking) and 'peer' is present in the answer.
'it' could be 'e' ('e' can mean 'electronic' which is similar to 'IT') and 'e' is found within the answer.
This explanation may well be incorrect...
'it's' is the link.
Can you help me to learn more?
(Other definitions for peerless that I've seen before include "Unmatched" , "Unrivalled" , "Without equal or match" , "Unparalleled, incomparable" , "Excellent" .)