Thanks, PenniF. That helps a bit. At least I now know not to seam it ahead and hope the join lands at the corner (my original plan). I'll try a sample corner out tomorrow. Sometimes it helps to be fiddling with the pieces while I read the words. I'm also going to watch the binding tool video (thanks, ragamuffin!) to see how it might be used for this. It sounds like a good tool to have.
Hugs,
Charlotte