https://www.chokolatedesigns.com/product/ebook-sea-urchin-corals/

This wafer paper sea urchins tutorial covers how to:

– Shape basic balls and cylinders to replace Styrofoam or RKT within your cakes
 – Cutting wafer paper
 – Shaping wafer paper
 – Sculpting wafer paper
 – Assembling wafer paper
 – Build a delicate yet strong and stable hollow structure
 – Think outside the box with wafer paper
 – Shape and assemble in different ways