Octohedron from dollar bill

 I closed the summary of my Christmas booklet and the editor started his work. Inside are two moneygami models (a new hexagonal dollar star and my famous Santa Claus, that was transformed in an dollar elf, see Youtube), but today I realized that this octohedron decoration it can be folded from a dollar bill. Fold in long and divided in seven equilateral triangles, assemble like in diagram!