The Origami Forum

I'm trying to follow this model but not really sure what they want me to do in step 13 "inside petal fold" http://hansbirkeland.150m.com/bookb2.htm
thanks!!

You made a petal fold in step 11 and unfolded it at 12. The 'point' you created with step 11, is in front. At 13, you basically do the same but the point is now going to be behind the front layer. (see the reversal of the valley fold into a mountain fold).

Good luck .

I think that helps- now I'm getting stuck with the next part, I'm going to start from the beginning and try again. thanks!

if you're having trouble with the books by Hans Birkeland why don't you try the book by Martin Wall? It is very simple and clever and is is diagrammed in:
Origami: 30 fold-by-fold projects, by Paolo Mulathino: http://www.giladorigami.com/BO_30Projects.html
Origami el mundo nuevo by Kunihiko Kasahara: http://www.giladorigami.com/BO_Mundo.html
Origami: paperfolding for fun by Eric Kenneway: http://www.giladorigami.com/BO_For_Fun.html
Doctor's Origami Dream Book by Toshikazu Kawasaki: http://www.giladorigami.com/BO_DoctorsDream.html
Origami Fun World by Makoto Yamaguchi: http://www.giladorigami.com/BO_Fun_World.html
ORU 16 (various authors) : http://www.giladorigami.com/BO_ORU14.html

Thanks for the suggestions- when I'm addicted enough, I'll invest in a Origami book. Thanks!