Here is a link for a ebook done by PixelOz many years ago. Probably get you started:
New Free E-Book About Paper Model Design With Blender 3D
Not sure but I think the original poster is actually looking for a cone/truncated cone program. Thinking the petals are no joy. I use TGEN2 provided by someone on Yahoo groups many years ago. There are plenty of on-line calculators to use.
Mike