more than the hair, your characters need better poses. Right now, they're doing the same 1up pose, and they're very off-balance. Check that edit I did in that other thread you did.
as for the hair, shade them as chunks, not as a helmet or string by string. Will get an image soon...
EDIT: here
as for the hair, shade them as chunks, not as a helmet or string by string. Will get an image soon...
EDIT: here