Maybe I wasn't clear enough. Pay close attention to the particle settings and notice the opacity map. The money pre-comp I made was 400 X 400 and the path animated to give the bill different shapes over time. I also rotated the money layer. The particle is set to use the Texture time from Start so each new particle will have the same motion as the master money layer. If the layer used for the particle is not animated then the particle will stay the same shape. Notice the edit to the opacity map also. This prevents the money from having different opacities over time.
If you change from a Textured Square to a Textured Disk you can add in rotation to the particles. Changing the texture time also changes the orientation of the particles based on the time the particle is created.
There are lots of parameters. You just need to start fiddling with them. You should also take a look at the CC particle World documentation. It's a little hard to find but the online user guide for AE has a link to the documentation for all of the Cycore (CC) effects bundled with After Effects. You'll find the info here: http://cycorefx.com/dloads_ccfx.php