melt the ends w/ lighter, wait a couple seconds, wet your fingers, then grab and twist the still melted (and HOT) ends to a point.
I hate blobs on the ends of cords, but for me, at least, this just leads to burnt fingers. If I wait for it to cool enough not to get burnt, even with wet fingers, it's too cool to form properly.
So I use the side of the lighter and a suitable surface to roll the hot blob down into an end piece.