I'm going to sound critical here but..
These are things you should work on here.
1) Too many repeating characters.
2) Shadows are all different or there aren't any. Try to be more consistent.
3) Clean vector art mixed with blurry cars doesn't look right
4) Those bright colors might not print as bright.
5) texture in the lettering; is that popcorn? Maybe use a solid color, gradient or image inside the letters.
6) Pacman maze lines are muddy. Try to get a clean vector version or just redraw them. It'll look much better.
Other than that, nice work.
![Grin ;D](http://newforum.arcadecontrols.com/Smileys/default/grin.gif)