I have made several of these lately and do them mostly in *double crochet. It works good. In order to add some dimension I sometimes throw in a row of triple or single here and there, and maybe some clusters. Keep experimenting, you will get something that works. And if all else fails try steaming.
*Sorry modify that to be half double crochet.
half double crochet you say.
interesting. that is one of my fave stitches. I'm loopy. So did you do the bill in that too or did you do it in single.