So I'm writing an essay and I would like someone to proof read and edit it. The intoduction is suppised to be grabbing, but im not aure if i made it too long.

I wouldn't repeat sudden.
I would take out was, it isn't needed because you explained your actions in the previse sentence
found instead of find
However, you hear the noise a second time. Louder than the first.
That's a start. I would look up how to write a correct MLA style paper