The point is that it is off balance. Here is a "put it very simple" but extremely important art theory about "Asymmetry"... No "rules" here, just something to think on.
http://daphne.palomar.edu/design/asymm.htmlThis link was just easy for me to find. But symmetry is a big deal in design theory. You should be able to find really complex and thought provoking research on the subject, down to even the psychological effect on the viewer when used in composition.
There are also other considerations that relate to the intellectual content; Classical, modern, post modern, and all of the offshoots of those ways of thinking.
But I really wanted to comment on your color work again. THis is another image from you that has a lot of nice thoughtful color. I don't know if your choosing this and getting what you set out for, or if you just have a natural talent for arranging colors and are not really thinking on it too much. But I think you should continue to devope your tallents here. Color theory is another even bigger area of art. There are literally volumes of books on the subject (not that I have read most of them or anything).
But maybe start with psychology and color, which people always seem to have fun with.
I just mean that its fun and something to think about while your working or waiting for test renders. And Im not implying anything about the images you posted. Like I said, you seem to have a good natural talent for color, so why not have even more fun with it?