Awful
You've proven that you can handle animation, but it really is the most basic grasp of the concept that I've seen in quite some time.
You need to work on your drawing - zoom in and use a smaller brush tool, to give yourself greater command of the drawing itself. You'll end up with much better detail on your drawings. I'd also consider getting a tablet, if you're serious about this sort of thing.
Watch some movies with knife crime in them. Kill Bill or Resevoir Dogs, for example. These will show you what a blood stained blade should look like. Don't have a red line dancing around on the blade, it just doesn't look real. Maybe darken the colour of the blood to theatrical scale as well, it would really help you.
Other than that, great advertisment for Coca-Cola :P
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