Needs work - a lot of work
Right, this piece has very obvious flaws, which some of the reviewers below have probably dwelled upon, which I have little interest in rehashing.
To improve, start with the audio - play it slightly quieter and get the mood set, with perhaps a few sounds of the city outside, as the camera pans past the front of the bank. Then you come into the bank and see the robber draw his gun, before pointing it at the cashier.
From there, the audio plays out and things happen. Be ambitious and show the bullet actually being fired and penetrating the skull of the cashier himself. There is a good scope for improvement in this piece, from using a smaller tool in the drawing phase and onwards from that use colour, rather than a black and white "schoolboy" approach to it all. If you make a few tweaks here and there, you'll get a much better looking presentation.
The filesize is small, so you can get a lot more out of it, for not all that much additional effort. Best of luck.
[Review Request Club]