In this tutorial, Aharon Rabinowitz shows you how to create the ghost trails effect seen in the trailer for Ghostbusters Afterlife.

Here's the expression used in the tutorial for linking a 2D lens flare to a 3D null, if you need it:

L = thisComp.layer("THE NAME OF LAYER YOU WANTR TO LINK TO");
L.toComp([0,0,0]);

Poster Frame background by Kevin Laminto: https://bio.link/kevinlx