The current image looks like this:
I ripped this image from my original game, but cannot locate the font used for it (I like the font).
The image needs to be less than 350 pixels deep but can be as wide as 700-800 pixels. I'm not married to the idea that it is on a plaque but it looks pretty good when it scrolls up over the background (see the game screenshots), and its used to good effect in other games, so something that looked good would work.