It's an ooold drawing (June 2010) redrawn and revamped. Those who are old Grey is... fans or old watchers here might remember the original.
For those who don't know it and interested, you can find it somewhere in this post
You can also find close ups of the drawing on my tumblr
Black (left) and White from my webcomic Grey is..
Also, I have the most adorable avatar gift from the sweetest *Vaniraa
made by =eivven
I have the best readers!