The EU flag should be something like this (i would put other eagle, like this looks like the French are rulling or something like that because of Napopleon. It should be something like a brand new Roman Eagle) countrys with so many history among themselfs United, and what we got? A blue background and a circle of stars. Nice work.
I´d have another idea. Draw one side laurel-leafes and on the other side-oak-leafes, that shows, that the basis of Europe are the romanic peoples, and the ones developing Europe after the middelage where the nordic countries (England, France, Germany, Scandinavia..). Once I saw such a Kaiserreich-postcard, where both leafes were.
Well I also thought it would be a good idea for Germany in the middelage, you know the Holy Roman Empire of German Nation, as it was the follower of the Roman Empire. The best of Rome and Germania united^^