I would strongly recommend this book. The how-to is brilliant - perfectly written and photographed. Much *much* better than the other tutorials I've looked at online. Plus you've probably guessed from my comment about glue, there's only one small step with a needle and thread so you don;t need to be able to sew to make them. There's a website supporting the book and a Flickr group of other people's projects. Just take a look at some of these:
1. Kanzashi Hair Clips, 2. KanzashiDetail,
Soooooo beautiful. I definitely want to make more. I'll be walking around soon with a bouquet's worth on my head.