Show yourself to have a heart, perhaps, and emulate (6,4)
I believe the answer is:
follow suit
'emulate' is the definition.
(thesaurus)
'show yourself to have a heart perhaps' is the wordplay.
I cannot quite understand how this works, but
'heart' could be 'suit' and 'suit' is found within the answer.
The remaining letters 'follow' is a valid word which might be clued in a way I don't understand.
This may be the basis of clue (or it may be nonsense).
'and' is the link.
Can you help me to learn more?
(Other definitions for follow suit that I've seen before include "Do the same as someone else" , "in due course" , "Be guided by corporation man" , "Play another club, perhaps" , "Do as others do" .)