Studio Arcanis

For 7 years ago I performed a destruction ritual on a person who was an idiot. I draw a puppet of him on a clean paper and used a knife to stab it down with my anger and hatred. It was supposed to be a psychodrama as I did not believe I could release magic just with a ritual like that... Some weeks later I met some people who worked together with this guy and they talked about him and a car crash he had been into that harmed an old lady... I rejected it on that time as I felt was just a coincidence...

Now today I have consider that it was something that effected his body which caused him to los control of his car... Can curses works in that way? How do curses manifests in reality?