Me likes your newest piccy, Kagome!! Just a few suggestions...of course...when don't I have them, right? :P
Watch the proportions. It's really easy to make the head too big or too small. Anime and manga really stretch the limits on proportions, but to make your pics effective, you've still got to pay attention to them.
Don't be afraid to elaborate and expose your characters' eyes! Eyes are the mose descriptive part of an anime work. Most of the character's feelings are expressed in their eyes, so don't be afraid to just practice eyes on a sheet of paper. This goes for any part of the body you are having trouble with. (For me, it's feet!! -_-)
The clothes are really awesome. You have some really neat ideas about what you want your characters to wear. Very original! Just make sure you pay attention to wrinkles and seams. It will really bring your pics to life.
Well...that's all I have to say! Hope it helps! Keep up the good work!! ^^