Here is the banner I asked for your help with. My 8-yo daughter's class had each painted a design onto a 1' square of fabric. The teacher wanted me to assemble them into a banner, in such a way they could be cut up at the end of the year, and each child given his or her own artwork back.
Someone here suggested using sashing, which I thought was a great idea. I eventually persuaded the teacher (although I later found out she didn't have a clue what I meant, even though I drew a sketch and everything), and my sister Stephanie helped me assemble the banner. It took two of us a whole day.
There is a photo at:
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With my daughter's square enlarged because I'm proud of her!