So, i decided remake the finished models for make it better. For the moment, Flandre looks better (no longer problems with the textures), and the rigging promises being better, specially the skirt, that it will use jigglebones (thanks SkyNinja for the suggestion. After test it in the Remilia model, it looked very good, and decided apply it on all the models).
At the moment, i cant take a photo of her (continues making textures) and the render doesnt look "at all" their aspect in-game.
I found a tutorial about Faceposing. The first tests looked me that is something very easy to do.
And well, i dont know if is a very good idea say it, but we have a "new member": Plasma HeadcrabD. At the moment he only will make the Mokou (Sister Red Huziwara) model:

He will not start working on her until he finish their map (OC_nacht_der_untoten), that looks incredible and promises a good gameplay.
And for last, with the help (yes, AGAIN) of XenoAisam, i could fixed her head:
http://gyazo.com/c508b8317309e6a236f0f9a96dfbe2f6
(Old image. I have fixed in MAX the hat and the hair. Didnt exported it yet because i´m remaking the physique of the head).
P.D: Looks like Gyazo works when it wants.