Design a miniature (5)
I believe the answer is:
model
This clue is a double definition.
'design' is the first definition.
(thesaurus)
'a miniature' is the second definition.
(thesaurus)
(Other definitions for model that I've seen before include "dummy" , "She parades on the catwalk" , "Small-scale replica" , "Clothes displayer" , "Scale replica" .)