I think the fact that you are asking about how to improve your marquee speaks louder than words. It sounds like there are some insecurities about the design, which is within reason. The marquee is pretty basic, and straightforward, nothing to write home about. I don't personally care for the blue granite, or however you want to describe the texture in back. But, I do agree with the comment above, I commend you highly for staying away from using "cade" in the text, original idea.
Why not look up some of your favorite arcade game marquee and pull in pieces, or fully emulate the design from those? Your design skills may not be much at this point, but any professional designer will tell you it is all about time and practice.
That would be my suggestion. Give the rest of us some context on which to suggest some design ideas. Pick some games that you love the artwork to narrow it down and list them here...
Jeff
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