The monja blanca (old white nun) is the national flower of Guatemala. (I have taken liberties with the coloration.) It requires a triangular starting shape, which may either be printed and cut out from the instructional sheet below, or folded and cut using the triangle base.
My 8 March 2013 blog about origami prompted me to launch a second blog, one dedicated solely to origami. This way, as I complete instructional sheets, I can post them directly to this blog and it will not interfere with my Beatles blog.