Blender is a free 3-D software that lets you create whatever model you want. Its difficulty is based on how well you know the hot keys. I like to use this program a lot with Garry's Mod to see how well I can make body armor or some kind of car part. I spend most of my time learning more about blender and what I can do with it.
After Effects & Photoshop tutorial: Create cosmic glows and lighting effects with particles - Digital Arts http://www.digitalartsonline.co.uk/tutorials/after-effects/create-cosmic-lighting-effects-with-particles/?akw=dell-cim#