The lineart was done by xHidaka over on DeviantArt http://xhidaka.deviantart.com/ and it was a commission from somebody at Otakon. the sketch and lineart were done by hand and then I colored it in GIMP. Hida does very inexpensive commissions so feel free to hop on over and get one. (for example a full color by her -she's a better colorist than me- with 2 people like this was only $17 at Otakon.