This feels a little incomplete, although the narration style was nicely done. Aside from the language errors (and there are quite a few for such a short work), it seems like this is more of an introduction to a character's life, rather than a well-contained plot. In other words, this is more like half of a story rather than a whole one. Consider adding more to the character's life by adding what happens next; in my opinion, you can't just introduce a psychotic character without showing how the psychopath talks to other people. Maybe showing their interaction with their contractor after the job is done would be enough to tie it off nicely.
I am interested to see how you expand with what you have so far.