man I like it. Very cool idea
The only thing is that the comedy style you've done doesn't really fit the mood of the track I think but that's just IMO.
It's also a bit much to ask of the audience to watch a guy making silly faces for 5 minutes. For me personally, it was funny for about 2 minutes but then I kinda lost interest.
I imagine it could be interesting to do it more "serious" but still using the facial expression idea.
It could be made more intense with more extreme close ups and faster editing (although the edit was good I think).
Might also have been interesting to do the same thing with a camera rigged to your body while walking around town so you get some interesting background action as well (and would also fit Karl's "walking the city streets" kind of lyrics).
But as it is, it's pretty well done I think.