Models, blueprints (8)
I believe the answer is:
patterns
I believe this clue is a double definition.
'models' is the first definition.
(I know this)
'blueprints' is the second definition.
('pattern' can be a synonym of 'blueprint')
(Other definitions for patterns that I've seen before include "'Models, blueprints (8)'" , "Models for making things" , "Guides for making something" , "Designs, shapes" , "Repeated decorative designs" .)