Trails Behind Projectiles How would I add comic-like trails to projectiles, such as arrows? I have an example from YouTube, but the effect is done in another software.

https://www.youtube.com/watch?v=K4lmGGSsFYg

The effect occurs around 27 seconds, where an arrow is shot and there is a blue trail behind it.
You have to use a particle system inside a particle system.
Just add the particle system you want to appear on the object you use for the first system, tweak the time and that should do it.