The angled railing in the foreground adds compositional interest, but I think that too much space was given to it and not quite enough to the waiter; his head is uncomfortably close to the edge of the frame.
Not a bad idea but I would have liked this more if the vertical line (I guess it´s a railing) were lower in the frame and the whole shot was brighter, the whole section where the waiter is is very dark and it´s very hard to make out any details. 4 from me.
The diagonal line at the bottom is really distracting. I think this would have been a better image if you had focused entirely on the scene of tables and chairs.
nice idea for your submission. when i look at this picture, it looks like some person reading a paper more than a waiter, imo. i like the angle of the shot, and the color treatment works with it. i would be interested in seeing a closer shot of the person in the shadow with the table. the guy standing in shadow with the white paper really pops out, and focusing in on him without all the empty tables could be interesting...