[Help] New hairstyle from new model in blender

[jacksliver]

As title, I want add new hairlong to game, there are some things I do not understand, it is about weight, I copy from other hairlong and bone I import from head, after all I do not know what to do in NIF and CK so that it can work in the game, someone help me and I thank so much.

 

P/s: Forgive for my language, it google translate.