- for more dyanism or however you spell that again xD it's always nice to add some wind or movement, like for example the skirt is blowing a bit up (not in a perverted way btw) and the hair flies a bit too (both into the same direction of course). example [x] like you can see, the hair & skirt is not just hanging straight down, there's a movement along with the pose!
- for the hair it's important that it flows again. Keep in mind from where the hair is growing, and start there! mm I don't really know how to explain something here, maybe take a look at detailed lineart from me? [x]
Hope I could help you! Don't give up, it's all a matter of practice

I support you all the way!