Hmm I second jramauri… I think the outline of her head could come in to better pronounce her the shapes in her face. At the moment her head is a round blob, while her face looks a little manly. Sorry but the head and face do not seem to be working with each other. This isn’t helped by her torso, which seems wide compared to her arms and legs. The hands could also be a little more petite in my opinion.
I would define her chin and cheeks a little more, widen her arms and legs, give her some more shoulders, widen her fingers, then reduce the torso a little. Once fixed some of these bits I would then try and get it as close to concept as possible. You’ve come a long way, so keep going!