I found this diagram on Panama Paper Folding. It’s a very easy model to fold. I decided to use Fabriano paper because it’s sturdier than duo paper- at least the ones I’m getting from Laura here in Buenos Aires.
This piece consists of 30 individual units. Each spike is three units there are a total of 10.
It was very easy to put together because the unit’s tabs over lapped with the adjacent piece 3 times! so I didn’t even think about using glue LOL.