Here you can download the episodes, all you need to download is episode 2 or 3, they have both good shoots of her since they are the episodes where she is introduced.

I think that character is a very good decision for cosplaying, not too daring, and she's quite charming, cool and cute. Has for materials i have no idea, i dont know too much about those things (fabrics etc), but i dont think its hard to make design-wise.