Butterfly Model 4:-
This is beautiful butterfly design named as Alexander swallowtail butterfly.This design is created by Michael LaFosse.
On complexity level it is intermediate.
Normal Origami sheets of 4.5 Inches Square is used to create this model.The paper is one side coloured and one side blank . This model comes best with the use of paper with contrast colours on both sides.
Michael LaFosse’s book – Origami Butterflies – which he co-authored with Greg Mudarri and Richard Alexander is a collection of designs on butterflies and this model is taken from there.
The best place to learn this model is at Michael LaFosses website PEM Origami.It is a 17.51 minutes video.Click on fold more models > In list of 2007 you can find the instruction link for butterfly.