Make perfect (6)
I believe the answer is:
polish
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">make perfect</span>' is the definition.<br/ ><span class="explanation-format__explanation">(polishing is a kind of making perfect)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for polish that I've seen before include "Give shine to" , "Buff - from Poland" , "Beeswax, for example" , "Shine up the nationality" , "Make smooth and glossy" .)