Some years ago I made several of these dodecahedra and hung them up as a mobile in our living room. Tall people were always catching their heads on the lowest one! The stitching is all running stitch. A bit of tension causes the raised points, an effect I really like. Pelmet vilene is used to make the structure, with wadded fabric pieces stitched, beads added, and used to cover the vilene shapes. Then the shapes are oversewn together.