sI draw mouths different than most Anime designers. I always liked the presence of lips. If your shooting for a more traditional anime style..I'd study some manga. There's not much to mouths.
Starting to shape up a bit, eh? Here's where it starts getting into "Style". Lot's of clueless folks say "all that japanese stuff looks alike" ..I beg to differ.
I believe the eyes set the styles apart from each other. It's like a fingerprint. you can tell who did what just by looking at the construction of the eyes. But I will admit ..All Japanese anime eyes share similar traits across the board.
1. They must be big and have the ability to water up at any moment
2. The shape is more "catlike" than just oval.
3. for females...the upperlash line is heavy, The lower lashline is also heavy and defines the curve of the eye.
4. The upper edge of the cheeks gets dashed with lines to define the edge of the eye socket.