After more than one month I finished this vector. It was quite an epic one but the outcome makes me happy. It's done with Inkscape 0.46. There is around 700 layers (I count groups as one since it's a pain not to). The svg weight 1,6 MB which is large but not exceptional. The exported image weight 5,8 MB and is in PNG. Vectored version of this scan (I took it from Imouto):

Like always, feel free tu use my vector in any way you want. Don't feel obligated to give me credits, I don't really care but leave me a message on my profile ^^