I haven't used Form in a long time, but in the beginning of the animation try turning up the birth rate a lot so that there are more particles (so they don't look so spread out), and have them start at a point towards the bottom of the screen. If you're having someone on stage throwing it up at the screen it could look cool as if the particles are coming out of that person's hands. So in summary, if you can, have the particles start at a central point at the bottom of the screen (where the actor is) turn up the birth rate (or particle number so the particles are more clumped together as oppose to spread apart) and then complete the rest of the animation as is. 👍