I don't think that they seem that Daemonette like to me right now, but I can see a good paint job fixing that. Skin tones that are truly otherworldly, like hues of purple and such. With the additions of the Dryad bits, they almost seem touched by Tzeentch more than Slannesh, but again I think it comes to a paint scheme to really push them to Slannesh.
I don't have much advice on how to better model them, but I do think they are very cool and I like that each is unique.
-Shadoweyed