kabutowari convert to gkt animation

[skywalkerxx]

ok guys i tried editing a kazaridachi to make the blade serrated but it turns out quite difficult and the results turn out crappy so im wondering if any1 knows how to make a long kabutowari(lenght of a tachi) and convert the animation into GKT stance rather than katana stance if possible, if any1 knows pls reply or give ur oponions