I had mentioned to the kids that they consider asymmetrical designs, and they did pretty good with them. Like you guys are saying, I too was surprised at how well they turned out. I'll probably use one when that time comes.
I had intended to award a 1st, 2nd, and 3rd prizes. But up to an hour before returning to the class to hand back their work I couldn't decide on just 3 "winners". So I gave the teacher some money, and asked her to involve the class to decide what to get for themselves. They decided to get custom class T-shirts with, of course, their own class design
Brief story: I talked with each student for a minute about their design, and offered a plane ride if they wanted using the EAA Young Eagles form. One girl was very interested in airplanes but was surprised that you could just fly planes for fun and hobby...she thought you had to be a professional pilot or nothing. Just goes to show that what we take for granted is not obvious at all to others.
Out of about 20-25 kids in the class, 19 were interested in this and turned in designs. I never thought that many art students would be interested! Once again my preconceptions were wrong.