Homura is a mysterious character from a single-season anime series called Madoka Magica that you need to watch right now.
I cannot describe the series without making it sound like a semi-generic magical girl series. It pretends to be a magical girl series, especially for the first two and a half episodes. What it actually is is some kind of bizarre cross between psychological horror and apocalyptic fantasy action. I can't describe it much further without spoiling it but if you don't watch it you are a horrible human being. I will warn you that about two thirds of the way through you will want to stop watching because it's so depressing.
This came out really well by the way. It does look almost like Homura when it's not colored in like this. It definitely came out a lot better than this picture.