Thank you all for your lovely comments.
I have had a few comments about the puzzle ball. Dunster, it is a bit different to the one in the link you gave me, although I like the Amish one, and might well have a go at it another time.
Although it will be too late for Christmas, I will be doing two more in the new year, for two friends that are expecting new babies. When I make them, I will take photos and try and get a tutorial together for those that might be interested.
I hope that this little one enjoys his present, and can take his quilt with him when he moves on from her foster care later next year.