Small Banner Design

Considering that every year at Pennsic, at least one of the big battles is so crowded and confused that the cart goes AWOL, I thought to steal dear Sir Roisin's idea and make a banner that accompanies the cart. And for other random flashy uses too.

Smaller and more portable than the standard, I want it to look Norman of course. This will be made using the same techniques and materials as the standards though.

Here's my first idea, but I'm not satisfied. Frankly, I wish it was a little flashier. At the same time, I'm keenly aware of the limitations of style in early period small banners. They did not typically have mottos or such on them. Even using a badge is an anachronism, since they were pretty rare prior to the 14th century.

Suggestions?