Interesting thread, since yesterday I watched a video (link from here) about binding. One thing she did was trim edges even, then sew around them to hold layers in place before sewing on the binding. The other, she actually trimmed the batting a little in from the edge. I'll have to find it again to see what kind of binding she put on that. I think Pieces2 had the best idea. Try a few ways and see what works best for you.