WIP - Torahime

Ever since I was a little girl, I've wanted to draw Torahime from Muramasa (Wii game). For an extra-curricular class, I have to do a huge drawing. The canvas thing I bought this week (which should've been bought since early February) is 20 x 30 inches long. I will be using pens only, no pencils or erasable stuffs.

This is a sketch that I made for it (of course, it'll look more realistic on the final canvas):



Criticize the crap out of it before I start on the real deal. Tell me what looks horribly wrong or what bothers you about it. Be as mean as possible.

Thanks!