I'm really quite pleased with it although I have learnt a few things along the way. When the instructions warn me not to over stuff it, they still mean a bit more than I used. I think it has too much give and a bit more stuffing wouldn't have gone a miss. If I was to do one as a gift for somebody I think I would buy nice buttons rather than some old ones in my sewing box - but then this was an experiment and I didn't want to buy anything for it.
Another time I would chose a more delicate pattern. I've seen some very pretty ones out on "the net" and, while this is nice, I don't think it's really pretty or delicate. However, I do love the effect where the two halves are joined together. It's amazine how neat and professional such a simple stitch can look.
So my conclusion of the experience? I would definately do one again, choosing a more delicate pattern and really pretty button. So while biscornu comes off my "to do" list, it also goes back on it as "a pretty biscornu".