Voiceover script

I am looking for a creative individual to write the voiceover for my short film.
I am looking to have the film entered into festivals both nationally and internationally.

Here is the rough cut of the film without sound.
password: Marksman
https://vimeo.com/127037558

The story is that of what we think is an assassin preparing for a job. The voiceover will need to be concise and clever. We follow him getting ready, receiving emails concerning his line of work, talking about why he is the best at his job, and then he goes to the window for a cigarette... and he gets shot. And the voiceover continues, and it turns out the voiceover belonged to the sniper all along.

The voiceover therefore needs to be self aware, and needs to seem like it could possibly apply to the first guy. It talks about life as a hired killer etc. And then when there is the reveal, he will be like "And that is why I'm the top of my field, etc etc"