The cloud filling stitch is what I have done here. Sharon at http://www.pintangle.com/ showed how to do it a while back. I've been meaning to try it ever since she showed it. The top picture shows it done with some sari silk. It really doesn't work. I ended up taking out the sari silk. Learn from my mistake. Below I tried it with silk thread. That works much better. It's a simple stitch and I really like it. I will definitely use it in my crazy quilting.