I have seen this style of photography for a while, and on new years eve decided to attempt it myself, i used sparkers as fire in summer in a residential area isnt a wise move. Set the camera up and after a few tweaks with the settings managed to get some awesome shots.
long exposure photography
This was a really fun project that i wish to attempt again one day. I have also seen the whisk and steel wool method that looks like fun but also dangerous for where i live.
thanks for looking