Enthusiasm of kicker opening with seven points (8)
I believe the answer is:
keenness
'enthusiasm of kicker' is the definition.
'keenness' can be an answer for 'enthusiasm' (keenness is a kind of enthusiasm). I'm not certain of the 'of kicker' bit.
'opening with seven points' is the wordplay.
'opening' indicates putting letters inside (some letters open a gap in others).
'with seven' becomes 'keens' (I am not sure about this - if you are sure you should believe this answer much more).
'points' becomes 'NEs' (NE is an example).
'keens' placed around 'nes' is 'KEENNESS'.
Can you help me to learn more?
(Other definitions for keenness that I've seen before include "Penetrating quality" , "Fervour" , "Avidity" , "Eagerness" , "Enthusiasm" .)