I'm trying to make it look like clusters are kind of shaking in a bottle.
Was planning to use particle world but i'm having two problems. I cant figure out how to make my own layer the particle... and i cant figure out how to get the bottle to be the limit so the particles bounce off the mask i create... on adobe's site it says to set it in the "Boundary" but i cannot find this??
If i make the effector its own adjustment layer (so i can put a mask on it only) it seems to give me a white background.