When all else fails, I fold one of the ends under and insert the other side of the binding into the folded end leaving both ends as though it was a finished seam. Then I carefully twist it open and pin where the two joined. This was a rough pinning. I open the two pieces of binding up and try to pin it like it should lay and then double check by refolding and placing back on the material. Sometimes it takes a couple of tries at the pinning. Then I sew...praying that I don't have to rip it. Most times I am good.