Large white areas on a marquee is a big no-no...
You'll end up being blinded by the light...
(Unless you never plan on using a light.

)
Stick with a darker background pattern or color (maybe a good gradient fade top->bottom)
Also...
I'm not big on character names... But the 2 on the left...
The cape still has an obvious edge (a little white there) to it.
That will stand out terribly when back-lit.
Again, be carefull with the white you have on you final marquee, it will be BRIGHT!