Everyone has attire on I fashioned with white wool, for example (12)
I believe the answer is:
alliteration
'white wool for example' is the definition.
('white wool' is an example of alliteration)
'everyone has attire on i fashioned' is the wordplay.
'everyone' becomes 'all' (all people).
'has' says to put letters next to each other.
'fashioned' indicates an anagram.
'attire'+'on'+'i'='attireoni'
'attireoni' is an anagram of 'iteration'.
'all'+'iteration'='ALLITERATION'
'with' is the link.
(Other definitions for alliteration that I've seen before include "Repeated first letters" , "Poetic rhyming device using words with the same initial letter" , "verse technique" , "Poetic ploy practised with panache!" , "Peter practised poetic ploy perfectly" .)