Moulding and shaping a star female (8)
I believe the answer is:
astragal
'moulding' is the definition.
(astragal is a kind of moulding)
'shaping a star female' is the wordplay.
'shaping' is an anagram indicator.
'female' becomes 'gal' (gal is a kind of female).
'a'+'star'='astar'
'astar' with letters rearranged gives 'astra'.
'astra'+'gal'='ASTRAGAL'
'and' is the link.
(Other definitions for astragal that I've seen before include "wooden strip" , "Beaded moulding for edging furniture" .)