Make it bigger and more out reaching so it feels like more of a transition between forms
As of now it’s pretty small

You usually want a more frame filling explosion or transition to mask the change from base-transformed states
Kinda like these gifs , the use of light , the electric and fire effects , etc , help sell the transformation and the energy

I was gonna use the normal Heavy Mob cemetery as the example but having Freddy and golden Freddy is funnier