I designed the petals for the lotus a while back, however after comparing my CAD design for the carriage to the petals, it became clear that having petals of different sizes would not meet the aesthetic direction I was heading in. So I made a layout of 15 petals (3 rings of 5) for 1 4'x8' sheet of 16 gauge sheet metal:

Here is the original design for the carriage, however, this would dictate 3 different attachment widths for the lotus petals, so rather than designing 3 different petals, I'm opting to redesign the carriage (making it simpler to fabricate as well.

Before:

After:

Bolts :)