First a word of warning… my English skills barely stretch to tutorials hence I am mostly unwilling to write them but I’ll try.
Leave a tail of which length is about one meter/little more than one yard. Then make a loop that you would usually do when you start crocheting. Do one chain stitch into that loop and then four single crochet stitches to the same loop. Close the loop by pulling from the long tail. You don’t have to make any extra stitches to close the circle of five stitches but start crocheting chain stitches (scooping back of the stitch only) to the just-made five stitches so that you make two stitches on every one. After one round you will end up having ten stitches on one round. Continue spiralling the rounds until you have about 6 to 7 rounds all together. Since you are not adding stitches, but keep the stitch count to ten per round, your piece will start turning into a bowl. You can turn it so that you have the tail coming from the inside. After about 6 to 7 rounds cut the yarn and leave a tail about 30 centimeters/1 foot long. Pull the shorter tail through the last stitch and set aside the hook.
Wind the longer tail into a tiny, hard yarn ball and stuff it inside the bowl. Then take a sewing needle and thread the other tail into it and gather the top as neatly as you can and pull tight… and there you have it!
I hope this is not too confusing. If you take a hook and look at the pictures, you hopefully end up with a ball just like mine. And really, it is so tiny and there is so little yarn wasted that don’t give up easily but try again; use your own judgement and you will soon catch it.
And then throw one at me!
PS. The hat pin was by a Finnish company Aarikka. It is one of their older collections - like really old - and I don't think it is available any more.