I recently installed inkscape because there is plenty Tachiban Kanade, but not a lot of GirlsDeMo 😦 As my first vector I chose one that some seemed intent on using as a wallpaper by taking a screen cap. Screen Caps of videos are always lower in quality than they could be (A blue ray disc can’t be screen captured unless you know how to bypass copy protect).
So, I give you Nakano Azusa from K-on! as she appears at 0:06 in the Go! Go! Manic opening theme. Less the school in the background.