(Alert!: If the annotation text doesn't render correctly, close the browser and reopen this video again.) This video shows how to create volumetric cloud texture for sprite-based particle system. The concept should be quite familiar to veteran. I hope amateur may find it useful for creating your own particle shapes/textures. Softwares: Paint Shop Pro 7, particleIllusion 3 PI3 Library file can be found in my homepage: www.geocities.jp