Perhaps sculpture's tipped over by my headwear (5,3)
I believe the answer is:
straw hat
'headwear' is the definition.
(I know that straw hat is a type of headwear)
'perhaps sculpture's tipped over by my' is the wordplay.
I cannot really understand how this works, but
'by' could be 'at' and 'at' is found in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for straw hat that I've seen before include "Capital Investment?"" , "Boater" , "Panama" .)