Great work, I'm glad to see another doller her
Your style is really creative and should be a breath of fresh air here.
I noticed in both dolls that your darker shades are very chunky in the hair, which is probably why you aren't very happy with it. It doesn't look quite natural. Also, the hair on the second doll looks flat. I'm not sure if this is the shape of the base's head or not, but making it a bit "fluffier" would help.