If you have a friend that owns the official hoodie, ask to borrow it for a little while and trace from that. ^_~ You can also take a smaller picture of it and draw a grid over it, then draw a much larger grid and copy what's in each square to reproduce the image in a larger size. The artbook has detailed drawings of characters' clothing and symbols.
Quote:
(edit) Well, I thought, I have the hoodie, so I might as well go ahead and take a photo of my own for you. The picture is large, and in greyscale. When you make your copy, be careful about some of the lines that cmae out a bit wavy. ^^; Tried to make it as flat as possible. Here is the link:
It might not be here forever.