I only colored this.
The line art was provided by MagicRinger. It can be found here.
MagicRinger!!! I'm sorry I took so long in coloring this! I was color blocked for the longest time until today ;; I tried to make the eyes and lips in your style so that the coloring of the picture wouldn't be epic fail.
Sorry for the long wait and hope you like >.<

I used:
Paint.NET and GIMP 2

Imouto Chan~