Okay, so the 2 people who responded said to do the disappearing nine patch. And to be honest, I think by the time I went to bed last night, I had already made up my mind to do that.
So, here's what I came up with.
Now here's my second question. Since I'm making two bags, should I make them identical, or do something different? I have enough charm packs to do the same fabric combination, so I was thinking of doing the same original configuration, but after they're cut, arranging them differently. This is one example of many possibilities.