Nuke FX(Unity) - I need some feedback

Oh thank you so much for taking the time to write all this man… You have no idea how valuable this is to me ^^ I understood all of your points and I was looking at my effect like “He is goddam right…” xD I’ll try all of those. (Only one point I wanna ask, “Remove the debris at the end”; you mean the ground mark or you didn’t like my attempt at flying dust particles ? xD)
Lang’s explosion was my first reference but I wanted to try to do those without copying every step. But you are right, I should just mimic people at the start, until I learn some basics.