Well, I have no idea how to actually add the lightning into the shot; but I was able to add the sound effects of Rey’s lightning from earlier into the scene. If anyone who knows how to do the lightning effect wants to take over from here, that would be amazing!
https://drive.google.com/file/d/1AehZ3R_NrH07XrvPbF1NvbtZFxzZfDP2/view?usp=sharing